Since cutting ties in 1979, U.S.-Iran dialogue has been sparse and largely fruitless.

Backgrounder: Some experts say a "Shiite crescent" holds the potential to transform Islamic politics in the coming years.

U.S. and Western military officials are calling on Iran to help stabilize Afghanistan, but historic tensions and allegations of arming militants raise doubts about Tehran’s intent.

This publication is now archived. How organized are the ongoing attacks on U.S. forces in Iraq?There are some signs that Iraqi resistance is growing increasingly organized, though experts caution tha…