A profile of the international terrorist network that the United States has singled out as the most serious threat to U.S. security.

Taliban fighters have stepped up their attacks along the Afghan-Pakistani border as the United States hands over control of southern Afghanistan to NATO forces, freeing up American troops to try, onc…

Chechen separatist Shamil Basayev is one of several rebel leaders to die violently in recent years. His death leaves the future of the movement in doubt.

U.S. experts say any new approach to bringing stability to Afghanistan must be regional in scope. Saudi Arabia, with historic ties to the Taliban and Afghan Pashtuns, could hold a principle seat at t…

Whatever the outcome of the current round of peace negotiations between Sudan’s government and rebel groups, the crisis in Darfur seems likely to drag on. Meanwhile, the UN Security Council is planni…