The Defense Intelligence Agency (DIA) is the main foreign military espionage organization of the United States, operating under the jurisdiction of Department of Defense (DoD). As one of the principal members of the U.S. Intelligence Community (IC), DIA informs national civilian and defense policymakers about the military intentions and capabilities of foreign governments and non-state actors, while also providing department-level intelligence assistance and coordination to individual military service intelligence components and the warfighter. The agency's role encompasses collection and analysis of defense-related foreign political, economic, industrial, geographic, and medical and health intelligence. As part of its national IC responsibilities, DIA regularly provides input for the President's Daily Brief.
Though sometimes compared to foreign military intelligence services, like the Russian GRU or Israeli Aman, DIA is unique in that two-thirds of its 17,000 e