Terrorism -- Foreign relations -- 11 Government policy -- 7 Politics and government -- 7 Prevention. -- 6 Prevention -- 5 National security -- 4 more ... War on Terrorism, 2001-2009 4 Foreign relations 3 History -- 3 Politics and government 3 Terrorism 3 Economic sanctions, American 2 Intelligence service -- 2 Islam 2 Islamic fundamentalism 2 Islamic fundamentalism -- 2 Political aspects 2 Prevention 2 Relations 2 Religious aspects -- 2 Security measures 2 Terrorists -- 2 Air power -- 1 Case studies 1 Causes 1 Church and state -- 1 Citizen participation. -- 1 Civil defense 1 Civil defense -- 1 less ...