The U.S. government designates Iran as the "most active state sponsor of terrorism," which feeds concerns about Iran’s growing nuclear program.

The growth and strengthening of Afghanistan’s domestic security forces is seen as key to an eventual U.S. exit, but some analysts caution that progress will remain slow.

A short summary of each of the G-20 member’s objectives for the April summit in London.

The Bush administration’s approach to the detention and prosecution of prisoners held at Guantanamo Bay, Cuba, has been deemed unconstitutional by the U.S. Supreme Court. But the battle continues.

Sen. Barack Obama’s foreign policy team includes former State Department veterans and newcomers from academia who seek to reinvigorate U.S. diplomacy.