Prevention Terrorism -- 22 Terrorism 6 Avian influenza -- 3 Child terrorists 3 Foreign relations 3 United States 3 more ... War on terrorism, 2001- 3 Democracy 2 Government policy 2 Government publications -- 2 Liberalism 2 National security -- 2 Treatment 2 Avian influenza 1 Brain 1 Case studies 1 Civil security -- 1 Drug abuse -- 1 Economic development 1 Government accountability 1 Government accountability -- 1 Homeland security 1 Hostage negotiations 1 Infrastructure -- 1 International cooperation 1 International offenses 1 Iraq War, 2003 1 Law and legislation 1 Mental health 1 less ...