A profile of the Group of 20 major and emerging world economies.

April’s G-20 summit has been billed as a forum for producing a "global New Deal." Experts say policymakers should focus on stopping financial turmoil before tackling long-term regulatory reforms.

Secretary of State Hillary Clinton, a senator and former First Lady, has offered a tough pragmatism on national security matters and called for reviving U.S. credibility in the world.

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.

As military leaders in Washington revise their war strategy for Afghanistan, analysts say enlisting Afghan tribesmen could aid in security. Others warn that what helped stabilize Iraq may play very d…