Terrorism Prevention 262 Religious aspects 91 History 88 Government policy 87 Islam 81 Terrorists 64 September 11 Terrorist Attacks, 2001 50 War on terrorism, 2001- 48 National security 44 United States 44 Foreign relations 39 Jihad 31 Politics and government 30 Psychological aspects 29 Thesis 29 Islamic fundamentalism 28 World politics 28 Political violence 27 Congresses 24 Qaida (Organization) 24 Dissertations, Academic 21 International cooperation 20 Biography 19 Psychology 17 Case studies 15 Juvenile literature 15 Islam and politics 14 Weapons of mass destruction 14 Democracy 13