Prevention -- Terrorism -- 23 Government policy -- 7 National security -- 7 International cooperation 6 Foreign relations -- 4 Terrorism 4 more ... Civil rights -- 3 History -- 3 Military policy 3 War on terrorism, 2001- 3 Civil defense -- 2 Conflict management -- 2 Defenses 2 Emergency management -- 2 Political aspects 2 Politics and government 2 Politics and government -- 2 Prevention 2 Security, International 2 Weapons of mass destruction 2 Abused children -- 1 Asymmetric warfare -- 1 Biological warfare 1 Biological weapons 1 Bioterrorism -- 1 Boundary disputes 1 Cae studies 1 Case studies 1 Case studies -- 1 less ...