Terrorism -- Foreign relations -- 12 Government policy -- 7 Politics and government -- 7 Prevention. -- 6 Prevention -- 5 History -- 4 more ... National security -- 4 War on Terrorism, 2001-2009 4 Politics and government 3 Economic sanctions, American 2 Intelligence service -- 2 Islam 2 Islamic fundamentalism 2 Islamic fundamentalism -- 2 Political aspects 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 Civil rights -- 1 Cold War 1 Combatants and noncombatants (International Law) 1 less ...