Prevention -- Terrorism -- 49 Government policy -- 15 Terrorism 12 International cooperation 11 National security -- 10 Government policy 8 more ... Prevention 8 History -- 5 Civil rights -- 4 Weapons of mass destruction 4 Emergency management -- 3 Foreign relations -- 3 History. -- 3 Law and legislation -- 3 Military policy 3 Politics and government -- 3 Civil defense -- 2 Conflict management -- 2 Counterinsurgency -- 2 Defenses 2 Economic sanctions, American 2 History 2 Political aspects 2 Politics and government 2 Relations 2 Security, International 2 War on terrorism, 2001- 2 Asymmetric warfare -- 1 Athletes -- 1 less ...