"Foreign fighters fuel the world's conflicts. They make conflicts more costly for host nations and peacekeepers. These extremists come from all over the world and believe they need to fight for their ideological survival. The best way to combat the use of foreign fighters is to stop them as close to the source as possible. This can be difficult, especially if the U.S. is lacking diplomatic, informational, military, and economic relations with the source country. The U.S. government, especially military and political agencies, needs to be aware of the foreign fighter phenomenon and plan for it when developing new contingency and campaign plans as well as further developing bilateral and regional relation¬ships in foreign fighter source and transit countries. This paper will discuss and highlight, from the national security perspective, the potential military actions for interdicting foreign fighters. The foreign fighter problem set, terminology, and life cycle are defined and discussed. Foreign fighters in current conflicts in Iraq, Afghanistan/Pakistan, and Somalia are discussed as well. Finally, potential solutions are introduced as well as actions the U.S. military can take to stem the flow of foreign fighters within stability operations framework."
Peacekeeping and Stability Operations Institute: http://pksoi.army.mil/