Government policy -- Terrorism -- Foreign relations -- 5 Prevention -- 5 Case studies 2 History -- 2 National security -- 2 more ... Politics and government -- 2 War on terrorism, 2001- 2 Case studies -- 1 Civil defense -- 1 Counterinsurgency -- 1 Cross- cultural studies 1 Defenses 1 Democracy -- 1 Economic sanctions, American 1 Emergency management -- 1 Foreign relations 1 Guerrillas -- 1 Influence 1 Insurgency -- 1 Iraq War, 2003- -- 1 Jihad 1 Military policy 1 Political aspects 1 Political culture -- 1 Politics and government 1 Protest movements -- 1 Relations 1 September 11 Terrorist Attacks, 2001 -- 1 less ...