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.

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

As the Obama administration finalizes its first defense budget, analysts say near-term growth will be followed by lean spending amid the worst economic crisis since the Great Depression.

Debating global warming policy has moved to the top of agendas worldwide, but some skeptics still question whether action is necessary or possible.

Trade accounts for an increasing portion of the U.S. economy, and the Obama administration has embraced a ramped up export strategy. But debate persists over the merits of a vigorous free trade agend…