Terrorism -- War on Terrorism, 2001-2009 Prevention 7 Government policy -- 5 Foreign relations -- 3 Politics and government -- 3 Prevention. -- 3 more ... Security measures 3 Aeronautics, Commercial -- 2 Evaluation. -- 2 National security -- 2 September 11 Terrorist Attacks, 2001 2 World politics -- 2 Anti-Americanism 1 Civil defense 1 Civil defense -- 1 Civil rights -- 1 Combatants and noncombatants (International Law) 1 Counterinsurgency -- 1 Defenses 1 Detention of persons -- 1 Executive power -- 1 Finance 1 Finance -- 1 Governmental investigations -- 1 Harbors -- 1 History 1 Human rights 1 Intelligence service -- 1 Interviews -- 1 less ...