Prevention Terrorism -- 118 Terrorism 35 Prevention -- 11 Security measures 11 Psychological aspects 9 Government policy 8 more ... Terrorists -- 8 War on Terrorism, 2001-2009 8 Psychology 7 War on terrorism, 2001- 6 Conflict management 5 Foreign relations 5 Government publications -- 5 History 5 International cooperation 5 Islam 5 National security -- 5 Religious aspects -- 5 Security, International 5 Social aspects 5 Hijacking of aircraft -- 4 Money laundering -- 4 Aeronautics, Commercial -- 3 Airports -- 3 Avian influenza -- 3 Child terrorists 3 Democracy 3 Finance 3 Finance -- 3 less ...