War on Terrorism, 2001-2009 Terrorism -- 16 Prevention 7 Government policy -- 5 Foreign relations -- 4 Politics and government -- 3 Prevention. -- 3 more ... Security measures 3 Terrorism 3 World politics -- 3 Aeronautics, Commercial -- 2 Detention of persons -- 2 Evaluation. -- 2 Executive power -- 2 Legal status, laws, etc -- 2 National security -- 2 September 11 Terrorist Attacks, 2001 2 Terrorists -- 2 War and emergency powers -- 2 Anti-Americanism 1 Civil defense 1 Civil defense -- 1 Civil rights -- 1 Combatants and noncombatants (International Law) 1 Counterinsurgency -- 1 Defenses 1 Ethnic conflict 1 Finance 1 Finance -- 1 Good and evil 1 less ...