Watch Michèle Flournoy, undersecretary of defense for policy, walk through the Department of Defense's review of national defense strategy and priorities.

Every four years, the U.S. Department of Defense conducts a congressionally mandated review of national defense strategy and priorities known as the Quadrennial Defense Review (QDR). As the Pentagon …

Ambassador Nathan A. Sales discusses U.S. counterterrorism initiatives and developments to the UN Security Council Resolution on Foreign Terrorist Fighters.

Jason Johnson, Chris Tuttle, and Margaret Talev discuss predictions for and reporting on the U.S. presidential election in 2024.

Lisa Curtis, senior fellow and director of the Indo-Pacific Security Program at Center for a New American Security, and Milan Vaishnav, senior fellow and director of the South Asia Program at the Car…