The United States has pursued missile defense technologies for six decades, with mixed results. Changes under the Obama administration, including adjustments to planned defenses in Europe, could port…

Successive U.S. administrations have sought to justify controversial domestic surveillance programs amid criticism from Congress and rights activists, explains this Backgrounder.

This publication is now archived. What’s caused the United States to seek a new Security Council resolution?Casualties and costs of the occupation of Iraq are far higher than U.S. officials expected…

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…