Retired Adm. Dennis C. Blair, President Obama’s director of national intelligence, is a former commander of the U.S. Pacific Command with long military experience.

China’s growing military capabilities pose a concern for U.S. security interests. Experts say the United States must push for greater engagement with China’s military to reduce the potential for misu…

Whether to engage heads of rogue states, a perennial foreign policy dilemma, has emerged in the 2008 U.S. presidential campaign.

Technology plays an increasing role in Homeland Security efforts, spawning a growing U.S.industry for everything from biometrics to cargo screening at ports.

Countries increasingly employ public relations firms and the techniques of brand marketing to build cohesive images for their nation.