Government policy -- Terrorism -- 21 Foreign relations -- 18 Prevention -- 8 Politics and government -- 7 War on Terrorism, 2001-2009 5 Military policy 4 more ... Nuclear weapons -- 4 Case studies 3 History -- 3 National security -- 3 Case studies -- 2 Economic sanctions, American 2 Politics and government 2 Relations 2 Social conditions -- 2 War on terrorism, 2001- 2 Arms transfers -- 1 Civil defense -- 1 Civil rights -- 1 Commerce -- 1 Counterinsurgency -- 1 Cross- cultural studies 1 Defence -- 1 Defenses 1 Democracy -- 1 Deterrence (Strategy) 1 Economic policy -- 1 Emergency management -- 1 Emigration and immigration -- 1 less ...