executive department - a federal department in the executive branch of the government of the United States

Bureau of Diplomatic Security, DS - the bureau in the State Department that is responsible for the security of diplomats and embassies overseas

Foreign Service - the part of the State Department that supplies diplomats for the United States embassies and consulates around the world

Bureau of Intelligence and Research, INR - an agency that is the primary source in the State Department for interpretive analyses of global developments and focal point for policy issues and activities of the Intelligence Community