War on Terrorism, 2001-2009 24 Terrorism -- 17 Foreign relations -- 9 Government policy -- 9 National security -- 6 Politics and government -- 5 Prevention. -- 5 more ... September 11 Terrorist Attacks, 2001 5 Evaluation. -- 3 Intelligence service -- 3 Prevention 3 Security measures 3 Aeronautics, Commercial -- 2 Civil defense -- 2 Civil rights -- 2 Defenses 2 Detention of persons -- 2 Executive power -- 2 Islam 2 Islamic fundamentalism 2 Legal status, laws, etc -- 2 Military policy 2 Terrorists -- 2 War and emergency powers -- 2 World politics -- 2 Afghan War, 2001- -- 1 Anti-Americanism 1 Armed Forces -- 1 Christianity and other religions -- 1 Civil defense 1 less ...