Bring them all home.
If all so-called democratic and free nations of the world concentrated their efforts on peacekeeping and what's going on in the Middle East and Africa, there'd be less dispossessed, angry, desperate young men and women who have nothing else left to lose but their lives. The only recourse they have is to turn to those who make them feel wanted and worthy (Hizballah, Al Queda, Taliban, al-Aqsa Martyrs Brigade, and so many more). As long as we the free ignore their plight and the atrocities their people suffer, this will never end.
If there's no willing cannon-fodder there wouldn't be much war, would there.
Of course to concentrate on fairness and balance would mean our governments really wanted peace wouldn't it, but where's the corporate profit in peace, eh?