A letter report issued by the Government Accountability Office with an abstract that begins "Denying safe haven to terrorists has been a key national security concern since 2002. Safe havens allow terrorists to train recruits and plan operations against the United States and its interests across the globe. As a result, Congress has required agencies to provide detailed information regarding U.S. efforts to address terrorist safe havens. In this review, GAO assesses the extent to which (1) the Department of State (State) has identified and assessed terrorist safe havens in its Country Reports on Terrorism and (2) the U.S. government has identified efforts to deny terrorists safe haven consistent with reporting requirements. To address these objectives, GAO interviewed U.S. officials and analyzed national security strategies; State reporting; and country-level plans for the Philippines, Somalia, and Yemen."