Prevention -- Terrorism -- Government policy -- 6 National security -- 6 International cooperation 4 Terrorism 4 Civil rights -- 3 more ... Military policy 3 Civil defense -- 2 Defenses 2 Foreign relations -- 2 History -- 2 Politics and government -- 2 Prevention 2 Security, International 2 War on terrorism, 2001- 2 Weapons of mass destruction 2 Asymmetric warfare -- 1 Cae studies 1 Case studies 1 Case studies -- 1 Computer crimes 1 Congresses 1 Counterinsurgency -- 1 Cross- cultural studies 1 Cyberterrorism 1 Deterrence(strategy) 1 Economic sanctions, American 1 Emergency management -- 1 Foreign relations 1 less ...