Team Leadership

This DB has three parts. 

1. As a manager, you may have employees who are not enthusiastic about working on a team.  This could be due to any number of reasons.  However, if your organization depends on cross-functional or cross-departmental teams to maximize resources and manpower, the employees will need to not only work on a team but be an active member. When faced with employees who are not willing to be an active member of a cross-departmental team how would you coach the employee to gain their buy-in. 
2. Why do you feel it is important to establish the authority a team has in the decision-making process prior to a project beginning? 
3. When an organization has offices in multiple countries how would you overcome the location and language barriers when creating a cross-functional or cross-departmental team?