Prevention Terrorism -- Terrorism 33 Prevention -- 10 Psychological aspects 9 Government policy 8 Security measures 8 more ... Terrorists -- 8 War on Terrorism, 2001-2009 8 Psychology 7 War on terrorism, 2001- 6 Foreign relations 5 International cooperation 5 Islam 5 National security -- 5 Religious aspects -- 5 Security, International 5 Social aspects 5 Government publications -- 4 Child terrorists 3 Democracy 3 Finance 3 Finance -- 3 History 3 Human rights 3 Law and legislation 3 Liberalism 3 Merchant marine -- 3 September 11 Terrorist Attacks, 2001 3 United States 3 less ...