Prevention Terrorism -- Terrorism 31 Prevention -- 9 Psychological aspects 9 Government policy 8 Psychology 7 more ... Terrorists -- 7 War on Terrorism, 2001-2009 7 Islam 5 Religious aspects -- 5 Security measures 5 Social aspects 5 War on terrorism, 2001- 5 Government publications -- 4 International cooperation 4 Security, International 4 Child terrorists 3 Democracy 3 Finance -- 3 History 3 Human rights 3 Liberalism 3 Aeronautics, Commercial -- 2 Airports -- 2 Commando troops 2 Finance 2 Foreign relations 2 Hijacking of aircraft -- 2 Hostage negotiations 2 less ...