Prevention Terrorism -- Terrorism 33 Prevention -- 10 Psychological aspects 9 Government policy 8 Terrorists -- 8 more ... Psychology 7 War on Terrorism, 2001-2009 7 Security measures 6 Islam 5 Religious aspects -- 5 Security, International 5 Social aspects 5 War on terrorism, 2001- 5 Government publications -- 4 International cooperation 4 Child terrorists 3 Democracy 3 Finance 3 Finance -- 3 Foreign relations 3 History 3 Law and legislation 3 Liberalism 3 Aeronautics, Commercial -- 2 Airports -- 2 Commando troops 2 Hijacking of aircraft -- 2 Hostage negotiations 2 less ...