Office Home Office Home About Us Key Topics HomeBureaus & Offices > Bureau of Political-Military Affairs ...Office of Regional Security and Arms Transfers hide Office of Regional Security and Arms Transfers Our Mission The Office of Regional Security and Arms Transfers (RSAT) advances U.S. foreign policy and national security interests through its management of bilateral/multi-lateral political-military and regional security relations and the sale/transfer of U.S.-origin defense articles and services to foreign governments.