Prevention -- Terrorism -- 25 International cooperation 6 Terrorism 6 Government policy 5 Government policy -- 5 National security -- 5 more ... Prevention 5 Law and legislation -- 3 Weapons of mass destruction 3 History. -- 2 Politics and government -- 2 Athletes -- 1 Case studies 1 Civil rights -- 1 Congresses -- 1 Counterinsurgency -- 1 Criminal justice, Administration of -- 1 Deterrence(strategy) 1 Economic sanctions, American 1 Emergency communication system -- 1 Emergency management -- 1 Foreign relations -- 1 History 1 History -- 1 Identification. -- 1 Intelligence officers -- 1 Internal security -- 1 International cooperation -- 1 International law 1 less ...