Prevention -- Terrorism -- Government policy -- 15 Terrorism 14 International cooperation 11 National security -- 11 Government policy 9 more ... Prevention 9 Foreign relations -- 6 Civil rights -- 4 History -- 4 War on terrorism, 2001- 4 Weapons of mass destruction 4 Law and legislation -- 3 Military policy 3 Politics and government -- 3 Civil defense -- 2 Counterinsurgency -- 2 Defenses 2 Economic sanctions, American 2 Emergency management -- 2 History. -- 2 Politics and government 2 Relations 2 Security, International 2 Terrorists -- 2 Asymmetric warfare -- 1 Athletes -- 1 Cae studies 1 Case studies 1 less ...