Terrorism -- Foreign relations -- 16 Government policy -- 11 Politics and government -- 8 War on Terrorism, 2001-2009 8 Prevention. -- 6 National security -- 5 more ... History -- 3 Political aspects 3 Politics and government 3 Prevention -- 3 Case studies 2 Civil rights -- 2 Economic sanctions, American 2 Intelligence service -- 2 Islam 2 Islamic fundamentalism -- 2 Military policy 2 Political aspects -- 2 Prevention 2 Relations 2 Religious aspects -- 2 Security measures 2 September 11 Terrorist Attacks, 2001 2 War -- 2 Air power -- 1 Case studies -- 1 Causes 1 Church and state -- 1 Citizen participation. -- 1 less ...