Contemporary international problems

"National Security"  Please respond to the following:

• Select any two of the four basic strategies used to preserve security. Identify and describe what assumptions are made about the opponent according to each of the two strategies you chose.
• Give an example of each of the two strategies in current world politics and speculate on their effectiveness
• Defense – 
• Deterrence – 
• Attempts to relax tensions between hostile countries
• Disarmament –