Terrorism -- Terrorism 19 Prevention 16 Prevention -- 11 Religious aspects -- 11 Islam 10 Government policy -- 7 more ... National security -- 6 Terrorists -- 6 Congresses 5 History -- 5 War on terrorism, 2001- 5 Islamic fundamentalism -- 4 Case studies 3 Child terrorists 3 Democracy 3 Foreign relations 3 Foreign relations -- 3 History 3 International cooperation 3 Islam and politics -- 3 Jihad 3 Political aspects 3 Politics and government 3 Civil defense -- 2 Congresses. -- 2 Emergency management -- 2 Forecasting 2 Globalization -- 2 Government policy 2 less ...