U.S. Army Gen. Lloyd Austin, left, the commander of U.S. Central Command, talks with Air Force Gen. Philip M. Breedlove, the commander of U.S. European Command, at the National War College at Fort Lesley J. McNair in Washington, D.C., during a strategic dialogue meeting May 8, 2014. Secretary of Defense Chuck Hagel, Chairman of the Joint Chiefs of Staff U.S. Army Gen. Martin E. Dempsey and all U.S. combatant commanders attended the meeting. (DoD photo by Staff Sgt. Sean K. Harp, U.S. Army/Released)