Terrorism -- Foreign relations -- 11 Government policy -- 11 Prevention -- 9 History -- 6 War on terrorism, 2001- 3 Case studies 2 more ... Defenses 2 Military policy 2 National security -- 2 Political aspects 2 Politics and government -- 2 September 11 Terrorist Attacks, 2001 2 Asymmetric warfare -- 1 Case studies -- 1 Civil defense -- 1 Cold War 1 Counterinsurgency -- 1 Cross- cultural studies 1 Democracy -- 1 Drug traffic -- 1 Economic sanctions, American 1 Emergency management -- 1 Foreign relations 1 Government policy 1 Guerrillas -- 1 Influence 1 Insurgency -- 1 Iraq War, 2003- -- 1 Islam and politics -- 1 less ...