IR research
The Tragedy of Great
Power Politics
0 NE
Introduction
M any i n the West seem to believe that "perpetual peace" among
the great powers is finally at hand. The end of the Cold War, so
the argument goes, marked a sea change in how great powers
interact with one another. We have entered a world in which there is little
chance that the major powers will engage each other i n security competi
tion. much less war, which has become an obsolescent enterprise. In the
words of one famous author, the end of the Cold War has brought us to
the "the end of history."'
This perspective suggests that great powers no longer view each other as
potential military rivals, but instead as members of a family of nations.
members of what is sometimes called the "'international community. " The
prospects for cooperation are abundant in this promising new world, a
world which is likely to bring increased prosperity and peace to all the great
powers. Even a few adherents of realism, a school of thought that has his
torically held pessimistic views about the prospects for peace among the
great powers. appear to have bought into the reigning optimism, as reflect
ed i n an article from the mid-l 990s titled "Realists as Optimists. "2
Alas, the claim that security competition and war between the great
powers have been purged from the international system is wrong. Indeed,
there is much evidence that the promise of everlasting peace among the
T H E T R A G E D Y OF G R E A T P O W E R P O L I T I C S
great powers was stillborn. Consider, for example, that even though the
Soviet threat has disappeared, the United States still maintains about one
hundred thousand troops i n Europe and roughly the same number i n
Northeast A s i a . It d o e s so because it recognizes t h a t dangerous rivalries
would probably emerge among the major powers i n these regions if U . S .
troops were withdrawn. Moreover, almost every European state, includ
ing the United Kingdom and France, still harbors deep-seated, albeit
muted, fears that a Germany unchecked by American power might
behave aggressively; fear of Japan i n Northeast Asia is probably even more
profound, and it is certainly more frequently expressed. Finally, the possi
bility of a clash between China and the United States over Taiwan is hard
ly remote. This is not to say that such a war is likely, but the possibility
reminds us that the threat of great-power war has not disappeared.
The sad fact is that international politics has always been a ruthless and
dangerous business, and it is likely to remain that way. Although the
intensity of their competition waxes and wanes, great powers fear each
other and always compete with each other for power. The overriding goal
of each state is to maximize its share of world power, which means gain
ing power at the expense of other states. But great powers do not merely
strive to be the strongest of all the great powers, although that is a wel
come outcome. Their ultimate aim is to be the hegemon-that is, the only
great power in the system.
There are no status quo powers i n the international system, save for
the occasional hegemon that wants to maintain its dominating position
over potential rivals. Great powers are rarely content with the current dis
tribution of power; on the contrary, they face a constant incentive to
change it i n their favor. They almost always have revisionist intentions,
and they will use force to alter the balance of power if they think it can be
done at a reasonable price . 3 At times, the costs and risks of trying to shift
the balance of power are too great, forcing great powers to wait for more
favorable circumstances. But the desire for more power does not go away,
unless a state achieves the ultimate goal of hegemony. Since no state is
likely to achieve global hegemony, however, the world is condemned to
perpetual great-power competition.
lntrocluction
This unrelenting pursuit of power means that great powers are inclined
to look for opportunities to alter the distribution of world power in their
favor. They will seize these opportunities if they have the necessary capa
bility. Simply put, great powers are primed for offense. But not only does
a great power seek to gain power at the expense of other states, it also
tries to thwart rivals bent on gaining power at its expense. Thus, a great
power will defend the balance of power when looming change favors
another state, and it will try to undermine the balance when the direction
of change is in its own favor.
Why do great powers behave this way? My answer is that the structure
of the international system forces states which seek only to be secure
nonetheless to act aggressively toward each other. Three features of the
international system combine to cause states to fear one another: 1) the
absence of a central authority that sits above states and can protect them
from each other, 2) the fact that states always have some offensive mili
tary capability, and 3) the fact that states can never be certain about other
states' intentions. Given this fear-which can never be wholly eliminat
ed-states recognize that the more powerful they are relative to their
rivals. the better their chances of survival. lndeed, the best guarantee of
survival is to be a hegemon, because no other state can seriously threaten
such a mighty power.
This situation, which no one consciously designed or intended, is gen
uinely tragic. Great powers that have no reason to fight each other-that
are merely concerned with their own survival-nevertheless have little
choice but to pursue power and to seek to dominate the other states in the
system. This dilemma is captured in brutally frank comments that
Prussian statesman Otto von Bismarck made during the early 1 860s,
when it appeared that Poland, which was not a n independent state at the
time, might regain its sovereignty. " R estoring the Kingdom of Poland in
any shape or form is tantamount to creating a n ally for any enemy that
chooses to attack us, " he believed, and therefore he advocated that Prussia
should "smash those Poles till, losing all hope, they lie down and die; I
have every sympathy for their situation, but if we wish to survive we have
no choice but to wipe them out. "4
4 T H I T R A G I D Y OF G R E A T P O W I R P O L I T I C S
Although i t i s depressing t o realize that great powers might think and
act this way, it behooves us to see the world as it is, not as we would like it
to be. For example, one of the key foreign policy issues facing the United
States is the question of how China will behave if its rapid economic
growth continues and effectively turns China into a giant Hong Kong.
Many Americans believe that if China is democratic and enmeshed in the
global capitalist system, it will not act aggressively; instead it will be con
tent with the status quo in Northeast Asia. According to this logic, the
United States should engage China in order to promote the latter's inte
gration into the world economy, a policy that also seeks to encourage
China's transition to democracy. If engagement succeeds, the United
States can work with a wealthy and democratic China to promote peace
around the globe.
Unfortunately, a policy of engagement is doomed to fail. II China
becomes an economic powerhouse it will almost certainly translate its
economic might into military might and make a run at dominating
Northeast Asia. Whether China is democratic and deeply enmeshed in the
global economy or autocratic and autarkic will have little effect on its
behavior, because democracies care about security as much as non
democracies do, and hegemony is the best way for any state to guarantee
its own survival. Of course, neither its neighbors nor the United States
would stand idly by while China gained increasing increments of power.
Instead, they would seek to contain China, probably by trying to form a
balancing coalition. The result would be an intense security competition
between China and its rivals, with the ever-present danger of great-power
war hanging over them. In short, China and the United States are des
tined to be adversaries as China's power grows.
O F F E N S I V E R E A L I S M
T his book offers a realist theory o f international politics that challenges the prevailing optimism about relations among the great powers. That enterprise involves three particular tasks.
Introduction
I begin by laying out the key components of the theory, which I call
"offensive realis m . " I make a number of arguments about how great pow
ers behave toward each other, emphasizing that they look for opportunities
to gain power at each others' expense. Moreover, I identify the conditions
that make conflict more or less likely. For example, I argue that multipolar
systems are more war-prone than are bipolar systems, and that multipolar
systems that contain especially powerful states-potential hegemons-are
the most dangerous systems of all. But I do not just assert these various
claims; I also attempt to provide compelling explanations for the behaviors
and the outcomes that lie at the heart of the theory. In other words, I lay
out the causal logic. or reasoning, which underpins each of my claims.
The theory focuses on the great powers because these states have the
largest impact on what happens in international politics . 5 The fortunes of
all states-great powers and smaller powers alike-are determined prima
rily by the decisions and actions of those with the greatest capability. For
example, politics in almost every region of the world were deeply influ
enced by the competition between the Soviet Union and the United States
between 1945 and 1990. The two world wars that preceded the Cold War
had a similar effect on regional politics around the world. Each of these
conflicts was a great-power rivalry, and each cast a long shadow over
every part of the globe.
Great powers are determined largely on the basis of their relative mili
tary capability. To qualify as a great power, a state must have sufficient
military assets to put up a serious fight in an all-out conventional war
against the most powerful state in the world.6 The candidate need not
have the capability to defeat the leading state, b u t it must have some rea
sonable prospect of turning the conflict into a war of attrition that leaves
the dominant state seriously weakened, even if that dominant state ulti
mately wins the war. In the nuclear age great powers must have a nuclear
deterrent that can survive a nuclear strike against it. a s well as formidable
conventional forces. In the u n likely event that one state gained nuclear
superiority over all of its rivals. it would be so powerful that it would be
the only great power in the system. The balance of conventional forces
would be largely irrelevant if a nuclear hegemon were to emerge.
6 T H I T R A G I D Y OF G R E A T POW E R POL I T I C S
M y second task in this book i s to show that the theory tells us a lot
about the history of international politics. The ultimate test of any theory
is how well it explains events in the real world, so I go to considerable
lengths to test my arguments against the historical record. Specifically, the
focus is on great-power relations from the start of the French
Revolutionary and Napoleonic Wars in 1 7 92 until the end of the twenti
eth century. 7 Much attention is paid to the E u ropean great powers because they dominated world politics for most of the past two h undred
years. Indeed, until Japan and the United States achieved great-power sta
tus in 1895 and 1 8 98, respectively, E urope was home to all of the world's
great powers. Nevertheless, the book also includes substantial discussion
of the politics of Northeast Asia, especially regarding imperial Japan
between 1 8 9 5 and 1945 and China in the 1 9 90s. The United States also
figures prominently i n m y efforts to test offensive realism against past
events.
S o m e of the important historical puzzles that I attempt to shed light o n
i n c l u d e the following:
1 ) What accounts for the three longest and bloodiest wars i n m o d
ern history-the French Revolutionary a n d N a p o l e o n i c Wars
( 1 792- 1 8 1 5) , World War I ( 1 9 1 4 -1 8 ) , and World War II ( 1 9 3 9 -45) conflicts that involved all of t h e maj o r powers i n the system?
2) What accounts for the long periods of relative peace i n E urope
between 1 8 1 6 and 1 8 52 , 1 8 7 1 a n d 1 9 1 3 , and especially 1 94 5 a n d
1 99 0 , d u ring t h e C o l d War?
3) Why did the Unite d Kingdom, which was by far the wealthiest
state in the world during the m i d - n inetee n t h ce n t u ry, n o t build a
powerful military and try to d o m inate E u rope? In other w o rds,
w h y did it behave differently from Napoleonic France, Wilhelmine
Germany, Nazi Germany, a n d the Soviet Union, all o f w h ich trans
lated their economic might into military might and strove for
E u ropean he ge m o n y ?
4) W h y was Bismarckian Germ a n y ( 1862- 90 ) especia l ly aggressive
between 1862 and 1870, fighting two wars with other great powers
I n t r o d u c t i o n 7
a n d one war with a minor power, b u t hardly aggressive at all from
1 8 7 1 until 1 890, when it fought n o wars and generally sought to
maintain the E u ropean status quo?
5) W h y did the United Kingdom, France, a n d Russia form a balanc
ing coalition against Wilhelmine Germany before World War I, but
fail to organize a n effective alliance to contain Nazi Germany?
6) Why did Japan a n d the states of Western E u rope join forces with
the United States against the Soviet Union in the early years o f
the Cold War, e v e n t h o u g h the U n i t e d States emerged f r o m World
War II with the most powerful economy in the world and a
n u clear monopoly?
7 } W h a t explains the commitment of American troops to Europe
a n d Northeast Asia during the twentieth century? For example,
why did the United States wait until April 1 9 1 7 to join World War I,
rather than enter the war when it broke out in August 1 9 1 4? For
that matter, why did the United States not send troops to Europe
before 1 9 1 4 to prevent the outbreak of war? Similiarly, why did
the United States not balance against Nazi Germany in the 1 9 3 0s
or send troops to Europe before September 1 9 3 9 to prevent the
outbreak of World War II?
8 ) Why did the United States and the Soviet Union continue build
ing u p their nuclear arsenals after each had acquired a secure sec
ond-strike capability against the other? A world in which both
sides have a n "assured destruction" capability is generally consid
ered to be stable and its nuclear balance difficult to overturn, yet
both superpowers spent billions of dollars and rubles trying to
gain a first-strike advantage .
Third, I use t h e theory to make predictions a b o u t great-power politics
in the twenty-first century. This effort may strike some readers as foolhardy,
because the study of international relations, like the other social sciences,
rests on a shakier theoretical foundation than that of the natura l sciences.
Moreover, political phenomena are highly complex; hence, precise politi
cal predictions are impossible without theoretical tools that are superior to
8 T H E T R A G E D Y OF G R E A T P O W E R P O L I T I C S
those w e now possess. A s a result, all political forecasting i s bound to
include some error. Those who venture to predict, as I do here, should
therefore proceed with humility, take care not to exhibit unwarranted con·
fidence, and admit that hindsight is likely to reveal surprises and mistakes.
Despite these hazards, social scientists should nevertheless use their
theories to make predictions about the future. Making predictions helps
inform policy discourse, because it helps make sense of events unfolding
in the world around us. And by clarifying points of disagreement, making
explicit forecasts helps those with contradictory views to frame their own
ideas more clearly. Furthermore, trying to anticipate new events is a good
way to test social science theories, because theorists do not have the bene·
fit of hindsight and therefore cannot adjust their claims to fit the evidence
(because it is not yet available ) . In short, the world can be used as a labo·
ratory to decide which theories best explain international politics. In that
spirit, I employ offensive realism to peer into the future, mindful of both
the benefits and the hazards of trying to predict events.
The V i rt u e s and L i m i ts of T h e o r y
It should b e apparent t h a t t h i s book is self·consciously theoretical. B u t out·
side the walls of academia, especially in the policy world, theory has a bad
name. Social science theories are often portrayed as the idle speculations of
head·in·the·clouds academics that have little relevance to what goes on in
the ""real world . " For example, Paul Nitze, a prominent American foreign·
policy maker during the Cold War, wrote, "Most of what has been written
and taught under the heading of 'political science' by Americans since
World War II has been . . . of limited value, if not counterproductive, as a
guide to the actual conduct of policy."' In this view, theory should fall
almost exclusively within the purview of academics, whereas policymak·
ers should rely on common sense, intuition, and practical experience to
carry out their duties.
This view is wrongheaded. In fact, none of us could understand the
world we live in or make intelligent decisions without theories. Indeed,
all students and practitioners of international politics rely on theories to
I n troduction 9
comprehend their surroundings. Some are aware of i t and some are not,
some admit i t and some do not; but there is no escaping the fact that we
could not make sense of the complex world around u s without simplify
ing theories. The Clinton administration's foreign policy rhetoric, for
example, was heavily informed by the three main liberal theories of
international relations: 1) the claim that prosperous and economically
i nterdependent states are u n likely to fight each other, 2 ) the claim that
democracies do not fight each other, and 3) the claim that international
institutions enable states to avoid war and concentrate instead on build
ing cooperative relationships.
Consider how Clinton and company justified expanding the member
ship of the North Atlantic Treaty Organization (NATO) in the mid-i 990s.
President Clinton maintained that one of the chief goals of expansion was
"'locking in democracy's gains in Central Europe,"' because "democracies
resolve their differences peacefully." He also argued that the United States
should foster an "open trading system," because "our security is tied to the
stake other nations have in the prosperity of staying free and open and
working with others, not working against them. "9 Strobe Talbott, Clinton's Oxford classmate and deputy secretary of state, made the same claims for
NATO enlargement: "With the end of the cold war, it has become possible
to construct a Europe that is increasingly united by a shared commitment
to open societies and open markets."' Moving the borders of NATO east
ward, he maintained, would help "to solidify the national consensus for
democratic and market reforms"' that already existed in states like Hungary
and Poland and thus enhance the prospects for peace in the region. 1 0
I n the same spirit, Secretary of S t a t e Madeleine Albright praised
NATO's founders by saying that "[t]heir basic achievement was t o begin
the construction of the . . network of rule-based institutions and
arrangements that keep the peace . " " B u t that achievement is not com
plete,"' she warned, and "our challenge today i s to finish the post-war con
struction project . [and] expand the area of the world i n which
American interests and values will thriv e . " 1 1
These examples demonstrate that general theories about how the
world works play a n important role i n how policymakers identify the ends
lO T H I T R A O I D Y O P O R I AT P OW I R POL I T I C S
they seek and the means they choose t o achieve them. Yet that i s not to
say we should embrace any theory that is widely held, no matter how
popular it may be, because there are bad as well as good theories. For
example, some theories deal with trivial issues. while others are opaque
and almost impossible to comprehend. Funhennore, some theories have
contradictions in their underlying logic, while others have little explana
tory power because the world simply does not work the way they predict.
The trick is to distinguish between sound theories and defective ones. 1 2
My a i m is t o persuade readers that offensive realism is a rich theory which
sheds considerable light on the workings of the international system.
As with all theories, however. there are limits to offensive realism's
explanatory power. A few cases contradict the main claims of the theory,
cases that offensive realism should be able to explain but cannot. All theo
ries face this problem, although the better the theory, the fewer the
anomalies.
An example of a case that contradicts offensive realism involves
Germany in 1 90 5 . At the time Germany was the most powerful state in
E u rope. Its main rivals on the continent were France and Russia, which
some fifteen years earlier had formed an alliance to contain the Germans.
The United Kingdom had a tiny army at the time because it was counting
on France and Russia to keep Germany at bay. When Japan unexpectedly
inflicted a devastating defeat on Russia between 1 904 and 1 90 5 , which
temporarily knocked Russia out of the E u ropean balance of power, France
was left standing virtually alone against mighty Germany. Here was an
excellent opportunity for Germany to crush France and take a gi ant step
toward achieving hegemony in E urope. It surely made more sense for
Germany to go to war in 1 90 5 than in 1 9 1 4 . But Germany did not even
seriously consider going to war in 1 90 5 , which contradicts what offensive
realism would predict.
Theories encounter anomalies because they simplify reality by empha·
sizing certain factors while ignoring others. Offensive realism assumes that
the international system strongly shapes the behavior of states. Structural
factors such as anarchy and the distribution of power, I argue, are what
matter most for explaining international politics. The theory pays little
Introduction 11
attention to individuals or domestic political considerations such a s ideol
ogy. It tends to treat states like black boxes or billiard balls. For example, it
does not matter for the theory whether Germany in 1 90 5 was led by
Bismarck, Kaiser Wilhelm, or Adolf Hitler, or whether Germany was dem
ocratic or autocratic. What matters for the theory is how much relative
power Germany possessed at the time. These omitted factors, however,
occasionally dominate a state's decision -making process; under these cir
cumstances, offensive realism is not going to perform as well. In short,
there is a price to pay for simplifying reality.
Fu rthermore, offensive realism does not answer every question that
arises in world politics, because there will be cases in which the theory is
consistent with several possible outcomes. When this occurs, other theo
ries have to be brought i n to provide more precise explanations. Social sci
entists say that a theory is .. indeterminate" in such cases, a situation that is
not unusual with broad-gauged theories like offensive realism.
An example of offensive realism's indeterminacy is that i t cannot
account for why the security competition between the superpowers dur
ing the Cold Wa r was more intense between 1 94 5 and 1 9 63 than between
1 9 63 and 1 990." The theory also has little to say about whether NATO
should have adopted an offensive or a defensive military strategy to deter
the Warsaw Pact in central E u rope.14 To answer these questions i t is neces
sary to employ more fine-grained theories, such as deterrence theory.
Nevenheless, those theories and the answers they spawn do not contra
dict offensive realism; they supplement it. In short, offensive realism i s
like a powerful flashlight in a d a r k r o o m : e v e n t h o u g h it c a n n o t i l l u m i
nate e v e r y n o o k and cranny, most of the t i m e i t i s an excellent tool f o r
navigating through the darkness.
It should be apparent from this discussion that offensive realism is main
ly a descriptive theory. It explains how great powers have behaved i n the
past a nd how they are likely to behave in the future. B u t it is also a pre
scriptive theory. States should behave according to the dictates of offensive
realism, because it outlines the best way to s u rvive i n a dangerous world.
O n e might ask, i f the theory describes how great powers act, w hy i s i t
necessary to s t ipulate how they should act? The imposing constrai nts of
12 T H I T R A O I D Y O F G R E A T P O W I R P O L I T I C S
the system should leave great powers with little choice but t o act a s the
theory predicts. Although there is much truth in this description of great
powers as prisoners trapped in an iron cage, the fact remains that they
sometimes-although not often-act in contradiction to the theory. These
are the anomalous cases discussed above. As we shall see, such foolish
behavior invariably has negative consequences. In short, if they want to
survive, great powers should always act like good offensive realists.
The P u r s u i t of Power
Enough said about theory. More needs to be said about the substance of
my arguments, which means zeroing in on the core concept of "power."
For all realists, calculations about power lie at the heart of how states
think about the world around them. Power is the currency of great-power
politics, and states compete for it among themselves. What money is to
economics, power is to international relations.
This book is organized around six questions dealing with power. First,
why do great powers want power? What is the underlying logic that
explains why states compete for it? Second. how much power do states
want? How inuch power is enough? These two questions are of para
mount imponance because they deal with the most basic issues concern
ing great-power behavior. My answer to these foundational questions, as
emphasized above, is that the structure of the international system
encourages states to pursue hegemony.
Third, what is power? How is that pivotal concept defined and meas
ured? With good indicators of power. it is possible to determine the power
levels of individual states, which then allows us to describe the architec
ture of the system. Specifically. we can identify which states qualify as
great powers. From there, it is easy to determine whether the system is
hegemonic (directed by a single great power), bipolar (controlled by two
great powers ) , or mu ltipolar (dominated by three or more great powers ) .
Furthermore, w e will know the relative strengths of t h e major powers.
We are especially interested in knowing whether power is distributed
more or less evenly among them, or if there are large power asymmetries.
Introduction 13
In particular, does the system contain a potential hegemon-a great
power that is considerably stronger than any of its rival great powers?
Defining power dearly also gives us a window into understanding state
behavior. I[ states compete for power, we learn more about the nature of
that competition if we understand more fully what power is, and there
fore what states are competing for. In short, knowing more about the true
nature of power should help illuminate how great powers compete
among themselves.
Fourth, what strategies do states pursue to gain power, or to maintain i t
when another great power threatens to upset the balance of power?
B lackmail and war are the main strategies that states employ to acquire
power. and balancing and buck-passing are the principal strategies that
great powers use to maintain the distribution of power when facing a dan
gerous rival. With balancing, the threatened state accepts the burden of
deterring its adversary and commits substantial resources to achieving that
goal. With buck-passing. the endangered great power tries to get another
state to shoulder the burden of deterring or defeating the threatening state.
The final two questions locus on the key strategies that states employ to
maximize their share of world power. The fifth is, what are the causes of
war? Specifically, what power-related factors make i t more or less likely
that security competition will intensify and tum into open conflict? Sixth,
when do threatened great powers balance against a dangerous adversary
and when do they attempt to pass the buck to another threatened state?
I will attempt to provide clear and convincing answers to these ques
tions. It s hould be emphasized, however, that there is no consensus
among realists on the answers to any of them. Realism i s a rich tradition
with a long history, and disputes over fundamental issues have long been
commonplace among realists. In the pages that follow, I do not consider
alternative realist theories i n much detail. I will make clear how offensive
realism differs from its main realist rivals. and I will challenge these alter
native perspectives o n panicular points. mainly to elucidate my own argu
ments. But no attempt will be made to systematically examine any other
realist theory. Instead, the locus will b e on laying o u t my theory of offen
sive realism a n d using i t to explain t h e past a n d predict t h e future.
14 T H I T R A G I D Y OP G R I A T POW I R POLI T I C S
Of course. there a r e also many nonrealist theories of international poli
tics. Three different liberal theories were mentioned earlier; there are
other nonrealist theories, such as social constructivism and bureaucratic
poJitics, to name just two. I will briefly analyze some of these theories
when I look at great-power politics after the Cold War ( C hapter 1 0),
mainly because they underpin many of the claims that international poli
tics has undergone a fundamental change since 1 9 90. Because of space
limitations, however, I make no attempt at a comprehensive assessment
of these nonrealist theories. Again, the emphasis in this study will be o n
m a k i n g the c a s e f o r offensive realism.
Nevenheless, it makes good sense at this point to describe the theories
that dominate thinking about international relations in both the academic
and policy worlds, and to show how offensive realism compares with its
main realist and nonrealist competitors.
L I B E R A L I S M V S . R E A L I S M
L iberalism and realism are the two bodies o f theory which hold places of privilege on the theoretical menu of international relations. Most of the great intellectual battles among international relations scholars take place
either across the divide between realism and liberalism, or within those
paradigms.15 To illustrate this point, consider the three most influential
realist works of the twentieth century:
1) E. H. Carr's The 1Wenty Years' Crisis. 1919-1939, which was pub lished in the United Kingdom shonly after World War II staned in
Europe ( 1939) and is still widely read today.
2 ) Hans Morgenthau's Politics among Nations. which was first pub
lished in the United States in the early days of the Cold War
( 19 48) and dominated the field of international relations for at
leas t the n e x t two decades.
3) Kenneth Waltz's Theory of International Politics, which has dominat
ed the field since it first appeared during the latter pan o f the Cold
War(l979).16
lntrocluction 15
All three of these realist giants critique some aspect of liberalism in
their writings. For example, both C a rr and Waltz take issue with the
liberal claim that economic interdependence enhances the prospects for
peace.17 More generally, C a rr and Morgenthau frequently criticize liberals
for holding utopian views of politics which, if followed, would lead states
to disaster. At the same time, these realists also disagree about a number
of imponant issues. Waltz. for example, challenges Morgenthau's claim
that m ultipolar systems are more stable than bipolar systems .11
F u rthermore. whereas Morgenthau argues that states strive to gain power
because they have an innate desire for power, Waltz maintains that the
structure of the international system forces states to pursue power to
enhance their prospects for survival. These examples are just a small sam
ple of the differences among realist thinkers."
Let u s now look more closely a t liberalism and realism, focusing first on
the core beliefs shared by the theories in each paradigm, a n d second on
the differences among specific liberal and realist theories.
L i be rali s m
T h e liberal tradition h a s i t s roots in t h e Enlightenment, that period i n
eighteenth-ce nt ury E u rope when intellectuals and political l e a d e r s had a
powerful sense that reason could be employed to make the world a better
place.20 Accordingly, liberals tend to be hopeful about the prospects of
making t he world safer a n d more peacefu l . Most liberals believe that i t i s
possible to substantially r e d u c e the scou rge of war a n d to increase i n t e r
n a t i o n a l prosperity. For this r e a s o n , liberal theories are sometimes labelled
"utopian" or .. idealis t . "
Liberalism's optimistic view of international politics is b a s e d o n three
core beliefs, which are common to almost all of the theories i n t h e para
digm. First, liberals consider states to be the m a i n actors i n international
politics. S econd, they emphasize that the internal characteristics of states
v a ry considerably, a n d that these differences have profound effects o n
s t a t e be ha vior." F u n h e rmore. liberal theorists often believe t h a t some
internal a rrangements ( e . g .. democracy) are i nherently preferable t o oth
ers (e.g., dictatorsh ip ) . For liberals. therefore. there are " g o o d " a n d "bad"
16 T H I T R A G E D Y OF G R I A T P O W E R P O L I T I C S
states i n the international system. Good states pursue cooperative policies
and hardly ever start wars on their own, whereas bad states cause con
flicts with other states and are prone to use force to get their way.22 Thus,
the key to peace is to populate the world with good states.
Third, liberals believe that calculations about power matter little for
explaining the behavior of good states. Other kinds of political and eco
nomic calculations matter more, although the form of those calculations
varies from theory to theory, as will become apparent below. Bad states
might be motivated by the desire to gain power at the expense of other
states, but that is only because they are misguided. In an ideal world,
where there are only good states, power would be largely irrelevant.
Among the various theories found under the big tent of liberalism, the
three main ones mentioned earlier are panicularly influential. The first
argues that high levels of economic interdependence among states make
them unlikely to fight each other." The taproot of stability. according to
this theory. is the creation and maintenance of a liberal economic order
that allows for free economic exchange among states. Such an order makes
states more prosperous. thereby bolstering peace, because prosperous
states are more economically satisfied and satisfied states are more peace
ful. Many wars are waged to gain or preserve wealth, but states have much
less motive to initiate war if they are already wealthy. Funhermore.
wealthy states with interdependent economies stand to become less pros
perous if they fight each other. since they are biting the hand that feeds
them. Once states establish extensive economic ties, in short, they avoid
war and can concentrate instead on accum ulating wealth.
The second. democratic peace theory. claims that democracies do not
go to war against other democracies.24 Thus, a world containing only
democratic states would be a world without war. The argument here i s
not t h a t democracies are less warlike than non-democracies, b u t rather
that democracies do not fight among themselves. There are a variety of
explanations for the democratic peace, b u t little agreement a s to which
one is correct. Liberal thinkers do agree, however. that democratic peace
theory offers a direct challenge to realism and provides a powerful recipe
for peace.
Introducti o n 1 7
Finally. s o m e liberals m a i n t a i n that international institutions enhance
the prospects for cooperation among states and thus significantly reduce
the likelihood of war.15 Institutions are not independent political entities
that sit above states and force them to behave i n acceptable ways. Instead.
institutions are sets of rules that stipulate the ways i n which states should
cooperate and compete with each other. They prescribe acceptable forms
o f state behavior a n d proscribe unacceptable kinds of behavior. These
rules are not imposed o n states by some leviathan, but are negotiated by
states, which agree to abide by the rules they created because i t i s i n their
interest to do s o. Liberals claim that these institutions or rules can funda
mentally change state behavior. Institutions. so the argument goes. can
discourage states from calculating self-interest o n the basis of how their
every move affects their relative power position. and thus they push states
away from war and promote peace.
Real i s m
I n contrast to liberals, realists a r e pessimists w h e n i t comes to internation
a l politics. Realists agree that creating a peaceful world would b e desirable,
but the y s e e n o easy way to escape the harsh world of securi ty competi
tion and war. C reating a peaceful world i s surely a n attractive idea, b u t it
i s n o t a practical one. "Realism," as Carr notes, "tends to em phasize the
irresistible strength o f existing forces and the inevitable character of exist
ing t e n d e n cies, a n d to insist that the highest wisdom lies i n accepting. and
adapting oneself t o these forces and these tendencies. "26
This gloomy view of international relations i s based o n three core
beliefs. First, realists, like liberals, treat states a s t h e principal actors in
world politics. Realists focus mainly o n great pow ers, however. because
these states dominate a n d shape international politics a n d they a l s o cause
t h e deadliest wars. S econd, realists believe that t h e behavior o f great pow
ers i s i n fluenced mainly by their external environment, n o t by thei r inter
n a l characteristics. The structure o f t h e international system, which a l l
states m u s t de a l w i t h , largely s h a p e s their foreign policies. R e a l i s t s t e n d
n o t to draw s h a r p distinctions b e t w e e n •good" a n d "bad" s t a t e s , becau s e
18 T H I T R A O I D Y OP G R E A T P O W E R P O L I T I C S
all great powers act according t o the same logic regardless o f their culture,
political system, or who runs the government. 27 It is therefore difficult to
discriminate among states, save for differences in relative power. In
essence, great powers are like billiard balls that vary only in size."
Third, realists hold that calculations about power dominate states'
thinking, and that states compete for power among themselves. That com
petition sometimes necessitates going to war, which is considered an
acceptable instrument of statecraft. To quote Carl von Clausewitz, the
nineteenth-century military strategist. war is a continuation of politics by
other means.29 Finally, a zero-sum quality characterizes that competition,
sometimes making it intense and unforgiving. States may cooperate with
each other on occasion, but at root they have conflicting interests.
Although there are many realist theories dealing with different aspects
of power, two of them stand above the others: human nature realism,
which is laid out in Morgenthau's Politics among Nations. and defensive
realism. which is presented mainly in Waltz's Theory of International Politics.
What sets these works apan from those of other realists and makes them
both imponant and controversial is that they provide answers to the two
foundational questions described above. Specifically, they explain why
states pursue power-that is, they have a story to tell about the causes of
security competition-and each offers an argument about how much
power a state is likely to want.
Some other famous realist thinkers concentrate on making the case that
great powers care deeply about power, but they do not attempt to explain
why states compete for power or what level of power states deem satisfac
tory. In essence, they provide a general defense of the realist approach, but
they do not offer their own theory of international politics. The works of
C a rr and American diplomat George Kennan fit this description. In his
seminal realist tract, The 1\venty Yea rs ' Crisis. Carr criticizes liberalism at
length and argues that states are motivated principally by power consider
ations. Nevenheless. he says little about why states care about power o r
how much p o w e r t h e y want.'° B l u n t l y put, t h e r e is no theory in his book.
The same basic pattern obtains i n Kennan's well-known book American
Diplomacy, 1900-1950. " Morgenthau and Waltz, on the other hand, offer
l n t r o cl u c t l o n 1 9
their o wn theories of international relations, which is why they have
dominated the discourse about world politics for the past fifty years.
Human nature realism, which is sometimes called "classical realism, "
dominated t h e study o f international relations from t h e late 1 940s, when
Morgenthau's writings began attracting a large audience, until the early
1 970s. 32 I t is based on the simple assumption that states are led by h u m a n
b e i n g s who have a " w i l l to p o w e r " hardwired i n t o them at birth . n That i s ,
s t a t e s have a n insatiable appetite f o r power, or what Morgenthau c a l l s " a
limitless lust for power, " w h i c h means that they constantly look f o r
opportunities to take the offensive and dominate o t h e r s t a t e s . i 4 All states come with a n "animus dominandi, " so there is no basis for discriminating
among more aggressive and less aggressive states, and there certainly
should be no room in the theory for status q u o state s . 1 5 Human nature
realists recognize that international anarchy-the absence of a governing
a uthority over the great powers---ca u ses states to worry about the balance
o f power. But that structural constraint is treated a s a second-order cause
o f state behavior. The principal driving force in international politics is the
will to power inherent in every state in the system, and it pushes each of
them to strive for supremacy.
D e fensive realism, which is frequently referred to a s "stru ct u ral real
ism." came o n the scene in the late 1 970s with the appearence of Waltz's
Theory of International Politics. i6 U n like Morgenthau, Waltz does not a s s u m e t h a t great p o w e r s are inherently aggressive b e c a u s e they are i n f u s e d w i t h
a will to p o w e r ; i n s t e a d he s t a n s by assuming that s t a t e s merely aim to
survive. Above all else. they seek security. Nevertheless, he maintains that
t h e structure o f the international system forces great powers to pay careful
attention t o the balance of power. In particular, a n a rchy forces security
seeking states to compete with each other for power, because power is the
best means to s u rvival. Whereas human nature is the deep cause o f s e cu
r i t y competition i n Morgen t h a u 's t h e o ry, a n a rchy plays t h a t role i n Waltz's t h eory. "
Waltz does not e m phasize, however, t h a t the international system pro
vides great powers with good reasons to act offensively to gain power.
Instead, h e appears to m a k e t h e opposite case: that anarchy encourages
20 T H E T R A G E D Y OF G R E A T P O W E R P O L I T I C S
states t o behave defensively and t o maintain rather than upset the balance
of power. "The first concern of states, " he writes, is "to maintain their
position in the system. "'38 There seems to be, as international relations the
orist Randall Schweller notes, a •status quo bias• in Waltz's theory."
Waltz recognizes that states have incentives to gain power at their
rivals' expense and that it makes good strategic sense to act on that motive
when the time is right. But he does not develop that line of argument i n
any detail. On the contrary, he emphasizes that w h e n g r e a t powers
behave aggressively, the potential victims usually balance against the
aggressor and thwan its effons to gain power.40 For Waltz, i n shon, bal
ancing checkmates offense." Funhermore, he stresses that great powers
must be careful not to acquire too much power, because "excessive
strength" is likely to cause other states to join forces against them, thereby
leaving them worse off than they would have been had they refrained
from seeking additional increments of power.42
Waltz's views on the causes of war further reflect his theory's status
quo bias. There are no profound or deep causes of war in his theory. In
particular. he does not suggest that there might be imponant benefits to
be gained from war. In fact, he says little about the causes of war, other
than to argue that wars are largely the result of uncenainty and miscalcu
lation. In other words, if states knew better, they would not stan wars.
Roben Jervis, Jack Snyder, and Stephen Van Evera buttress the defen
sive realists' case by focusing attention on a structural concept known as
the offense-defense balance." They maintain that military power at a n y
p o i n t in t i m e c a n be categorized as favoring e i t h e r offense or defense. If
defense has a dear advantage over offense, and conquest is therefore diffi
cult, great powers will have little incentive to use force to gain power and
will concentrate instead on protecting what they have. When defense has
the advantage, protecting what you have should be a relatively easy task.
Alternatively, if offense is easier, states will be sorely tempted to try con
qu ering each other, and there will be a lot of war in the system. Defensive
realists argue. however, that the offense-defense balance is usually heavily
tilted toward defense, thus making conquest extremely difficult.44 I n sum,
efficient balancing coupled with the natural advantages of defense over
I ntroduction 2 1
offense should discourage great powers from pursuing aggressive strate
gies a n d instead make them "defensive positionalists. "45
M y theory of offensive realism is also a structural theory of internation
a l politics. As with defensive realism, my theory sees great powers a s con
cerned mainly with figuring out how to survive in a world where there is
n o agency to protect them from each other; they q u ickly realize that
power is the key to their survival. Offensive realism parts company with
defensive realism over the question of how much power states want. For
defensive realists. the international structure provides states with little
incentive to seek additional increments of power; instead it pushes them
to maintain the existing balance of power. Preserving power, rather than
i n creasing it, is the main goal of states. Offensive realists, on the other
hand, believe that status q u o powers are rarely found in world politics,
because the international system creates powerful incentives for states to
look for opponunities to gain power at the expense o! rivals, a n d to take
advantage o! those situations when the benefits outweigh the costs. A
state's ultimate goal is to be the hegemon in the system.46
I t should be apparent that both o!!ensive realism and h u m a n nature
realism portray great powers a s relentlessly seeking power. The key differ
ence between the two perspectives is that offensive realists reject
Morgentha u's claim that states are naturally endowed with Type A per
sonalities. O n the contrary, they believe that the international system
forces great powers to maximize their relative power beca use that is the
optimal way to maximize their security. In other words, s u rvival man
dates aggressive behavior. Great powers behave aggressively not because
they want to o r because they possess some inner drive to dominate, but
beca u s e they have to seek more power i i they want to m a x i m ize their
odds o ! s u rvival. (Table I. I s um m a rizes h o w the m a i n r ealist theo r ies
a n s w e r the f ou ndational que st ions described abov e . )
N o ankle o r b o o k m a k e s the c a s e f o r offensive realism i n the sophisti
cated ways t h a t Morgenthau does for human n a t u r e realism a n d Waltz
a n d others d o for defensive realism. For sure, some realists have argued
t h a t th e system gives great powers good reasons t o a ct aggressively.
Probably t h e best brief for offensive realism is a shon. obscure b o o k writ-
2 2 T H I T R A G E D Y O F G R I A T P O W I R P O L I T I C S
T A. I L i 1 . 1
The Major Realist Theories
Human Nature
Realism
What causes states to Lust for power compete for power? inherent in states
How much power A l l they can get.
do states want? States maximize
relative power.
with hegemony as
their ultimate goal.
Defensive
Realism
Structure o f
the system
Not much more
than what they have.
States concentrate
on maintaining the
balance of power.
Offensive
Realism
Structure of
the system
A l l they can g e t .
States maximize
relative power,
with hegemony as
their ultimate goal.
ten during World War I by G. Lowes Dickinson, a B ritish academic who
was an early advocate of the League of Nations.47 In The European Anarchy,
he argues that the root cause of World War I ·was not Germany nor any
other power. The real culprit was the E u ropean anarchy,· which created
powerful incentives for states "to acquire supremacy over the others for
motives at once of security and domination. "48 Nevertheless, neither
Dickinson nor anyone else makes a comprehensive case for offensive real
ism." My aim in writing this book is to fill that void.
P OW E R P OL I T I C S IN L l l E R A L A M E R I C A
Whatever merits realism may have a s a n explanation for real-world politics and as a guide for formulating foreign policy, it is not a pop ular school of thought in the West. Realism's central message-that it
makes good sense for states to sellishly pursue power-does not have
broad appeal. It is difficult to imagine a modem political leader openly ask
ing the public to light and die to improve the balance of power. No
European or American leader did so during either world war or the Cold
I n troduction 23
War. Most people prefer to think of fights between their own state and
rival states as clashes between good and evil. where they are on the side of
the angels and their opponents are aligned with the devil. Thus, leaders
tend to portray war as a moral crusade or a n ideological contest, rather
than a s a struggle for power. Realism is a hard sell.
Americans appear to have a n especially intense antipathy toward bal
ance-of-power thinking. The rhetoric of twentieth-century presidents, for
example, is filled with examples of realism bashing. Woodrow Wilson is
probably the most well-known example of this tendency, because of his elo
quent campaign against balance-of-power politics during and immediately
after World War 1 . 50 Yet Wilson is hardly unique, and his successors have fre
quently echoed his views. In the final year of World War II, for example, Franklin Delano Roosevelt declared, "In the future world the misuse of
power as implied in the term 'power politics' must not be the controlling
factor i n international relations. " 5 1 More recently, Bill Clinton offered a
strikingly similar view, proclaiming that "in a world where freedom, not
tyranny, is on the march, the cynical calculus of pure power politics simply
does not compute. It is ill-suited to a new era. "' 52 He sounded the same
theme when defending NATO expansion in 1 997, arguing that the charge
that this policy might isolate Russia was based on the mistaken belief "that
the great power territorial politics of the 20th century will dominate the 2 1 st
century. • Instead, Clinton emphasized his belief that •enlightened self
interest, a s well a s shared values, will compel countries to define their great
ness in more constructive ways . . . and will compel u s to cooperate . " 5 3
W h y A m e r i c a n s D i s l i ke Real i s m
Americans t e n d to be hostile to realism because it clashes w i t h t h e i r basic
values. Realism stands opposed to Americans' views of both themselves
a n d the wider worl d . " In particular, realism is a t odds with the deep-seated sense o f optimism a n d moralism that pervades much of American society.
Liberalism. o n the other hand, fits neatly with those values. Not s urprising
ly, foreign policy discourse i n the United States often sounds a s if it has
been lifted right o u t of a Liberalism I O I lecture.
24 T H I T R A G I D Y OF G R E A T P O W I R P O L I T I C S
Americans are basically optimists.55 They regard progress i n politics,
whether at the national or the international level, as both desirable and
possible. As the French author Alexis de Tocqueville observed long ago,
Americans believe that •man is endowed with an indefinite faculty of
improvement. " 56 Realism, by contrast, offers a pessimistic perspective on
international politics. It depicts a world rife with security competition and
war, and holds out little promise of an "escape from the evil of power,
regardless of what one does . " 57 Such pessimism is at odds with the power
ful American belief that with time and effort, reasonable individuals can
cooperate to solve important social problems.58 Liberalism offers a more
hopeful perspective on world politics, and Americans naturally find it
more attractive than the gloomy specter drawn by realism.
Americans are also prone to believe that morality should play an
important role in politics. As the prominent sociologist Seymour Martin
Lipset writes, "Americans are utopian moralists who press hard to institu
tionalize virtue, to destroy evil people, and eliminate wicked institutions
and practices. "'59 This perspective clashes with the realist belief that war is
an intrinsic element of life in the international system. Most Americans
tend to think of war as a hideous enterprise that should ultimately be
abolished from the face of the Earth. It might j ustifiably be used for lofty
liberal goals like fighting tyranny or spreading democracy, but it is morally
incorrect to fight wars merely to change or preserve the balance of power.
This makes the Clausewitzian conception of warfare anathema to most
Americans.60
The American proclivity for moralizing also conflicts with the fact that
realists tend not to distinguish between good and bad states, but instead dis
criminate between states largely on the basis of their relative power capa
bilities. A purely realist interpretation of the Cold War, for example, allows
for no meaningful difference in the motives behind American and Soviet
behavior during that conflict. According to realist theory, both sides were
driven by their concerns about the balance of power, and each did what it
could to maximize its relative power. Most Americans would recoil at this
interpretation of the Cold War, however, because they believe the United
States was motivated by good intentions while the Soviet Union was not.
l n t r o cl u c t i o n 2 5
Liberal theorists do distinguish between good and bad states, of course,
and they usually identify liberal democracies with market economies a s
the most worthy. Not surprisingly, Americans t e n d to l i k e t h i s perspective,
because i t identifies the United States as a benevolent force i n world pol
itics a n d ponrays its real and potential rivals as misguided or malevolent
troublemakers. Predictably. this line of thinking fueled the euphoria that
attended the downfall of the Soviet Union and the end of the Cold War.
When the •evil empire• collapsed, many Americans (and E u ropeans) con
cluded that democracy would spread across the globe and that world peace
would soon break out. This optimism was based largely on the belief that
democratic America is a virtuous state. If other states emulated the United
States, therefore, the world would be populated by good states, and this
development could only mean the end of international conflict.
Rhetoric vs. Proctice
B ecause Americans dislike realpolitik, public discourse about foreign poli
cy i n the United States is usually couched in the language of liberalism.
Hence the pronouncements of the policy elites are heavily flavored with
optimism a n d moralism. American academics are especially good at pro
moting liberal thinking in the marketplace of ideas. Behind dosed doors.
however, the elites who make national security policy speak mostly the
language of power, not that of principle, and the United States acts in the
international system according to the dictates of realist logic . 6 1 In essence,
a discernible gap separates public rhetoric from the actual conduct of
American foreign policy.
Prominent realists have often criticized U . S . diplomacy on the grounds
that i t is too idealistic and have complained that American leaders pay
insufficient attention to the balance of power. For example, Kennan wrote
i n 1 9 5 1 . •1 see the most serious fault of our past policy formulation to lie
i n something that I might call the legalistic-moralistic approach to interna
tional problem s . This approach runs like a red skein through o u r foreign
policy o f the last fifty years . • ., According to this line of argument. there is
n o real gap between America's liberal rhetoric a n d its foreign policy
26 T H I T R A G I D Y or G R E A T P O W E R P O L I T I C S
behavior, because t h e United States practices what it preaches. B u t this
claim is wrong, as I will argue at length below. American foreign policy
has usually been guided by realist logic. although the public pronounce
ments of its leaders might lead one to think otherwise.
It should be obvious to intelligent observers that the United States
speaks one way and acts another. In fact, policymakers in other states
have always remarked about this tendency in American foreign policy. As
long ago as 1 9 39, for example, Carr pointed out that states on the
European continent regard the English-speaking peoples as "'masters in
the a n of concealing their selfish national interests in the guise of the gen
eral good , · adding that "this kind of hypocrisy is a special and characteris
tic peculiarity of the Anglo-Saxon mind. " 6 1
Still, the gap between rhetoric and reality usually goes unnoticed in the
United States itself. Two factors account for this phenomenon. First, realist
policies sometimes coincide with the dictates of liberalism, in which case
there is no conflict between the pursuit of power and the pursuit of prin
ciple. Under these circumstances, realist policies can be j ustified with lib
eral rhetoric without having to discuss the underlying power realities.
This coincidence makes for an easy sell. For example. the United States
fought against fascism in World War I I and communism in the Cold War
for largely realist reasons. B u t both of those fights were also consistent
with liberal principles, and thus policymakers had little trouble selling
them to the public as ideological conflicts.
Second, when power considerations force the United States to act in
ways that conflict with liberal principles, "spin doctors· appear and tell a
story that accords with liberal ideals." For example. in the late nineteenth
century. American elites generally considered Germany to be a progres
sive constitutional state wonhy of emulation. But the American view of
Germany changed in the decade before World War I, as relations between
the two states deteriorated. B y the time the United States declared war on
Germany in April 1 9 1 7, Americans had come to see Germany as more
a utocratic and militaristic than its European rivals.
Similarly. during the late 1 9 30s, many Americans saw the Soviet Union
a s a n evil state. panly in response to Josef Stalin's murderous internal
I n tro d u c t i o n 2 7
policies and h i s infamous alliance with Nazi Germany i n A u g u s t 1 9 3 9 .
Nevertheless, w h e n t h e United States joined forces w i t h the Soviet Union
in late 1 94 1 to fight against the Third Reich, the U.S. government began a
massive public relations campaign to clean up the image of America's new
ally and make it compatible with liberal ideals. The Soviet Union was now
portrayed a s a proto-democracy, and Stalin became "Uncle Joe . "
H o w is it possible to g e t away with this contradktion between rhetoric
and policy? Most Americans readily accept these rationalizations because
liberalism is so deeply rooted in their culture. As a result, they find it easy
to believe that they are acting according to cherished principles, rather
than cold and calculated power considerations.65
T H E P L A N OF T H E B OO K
T he r e s t of the chapters in t h i s b o o k are concerned m a i n l y with answering the six big questions about power which I identified earlier. Chapter 2 , which is probably the most important chapter i n the book, lays
out m y theory of why states compete for power and why they pursue
hegemony.
In Chapters 3 and 4, 1 define power and explain how to measure it. I do
this in order to lay the groundwork for testing my theory. It is impossible
to determine whether states have behaved according to the dictates of
offensive realism without knowing what power is and what different
strategies states employ to maximize their share of world power. My start
ing point is to distinguish between potential power and actual military
power, and then to argue that states care deeply about both kinds of
power. Chapter 3 focuses on potential power, which involves mainly the
size o f a state's population and its wealth. Chapter 4 deals with actual mil
itary power. It is a n especially long chapter because I make arguments
about "the primacy of land power· and "the stopping power of water"
that are novel and likely to be controversial.
I n Chapter 5, I discuss the strategies that great powers employ to gain
a n d maintain power. This chapter includes a substantial discussion of the
28 T H E T R A G I D Y Of G R I A T P O W I R P O L I T I C S
utility o f war for acquiring power. I also focus o n balancing and buck
passing, which are the main strategies that states employ when faced with
a rival that threatens to upset the balance of power.
In Chapters 6 and 7, I examine the historical record to see whether
there is evidence to suppon the theory. Specifically. I compare the con
duct of the great powers from 1792 to 1 990 to see whether their behavior
fits the predictions of offensive realism.
In Chapter 8, I lay out a simple theory that explains when great powers
balance and when they choose to buck-pass. and then I examine that the
ory against the historical record. Chapter 9 focuses on the causes of war.
Here. too, I lay out a simple theory and then test it against the empirical
record.
Chapter IO challenges the oft-made claim that international politics has been fundamentally transformed with the end of the Cold War. and that
great powers no longer compete with each other for power. I briefly assess
the theories underpinning that optimistic perspective, and then I look at
how the great powers have behaved in Europe and Northeast Asia
between 1 99 I and 2000. Finally, I make predictions about the likelihood of great-power conflict in these two important regions in the early twenty
first century.