Terrorism -- Prevention 20 Terrorism 17 Prevention -- 10 Religious aspects -- 9 Terrorists -- 9 Islam 8 more ... History -- 7 Psychological aspects 7 Foreign relations -- 6 Politics and government -- 6 Government policy -- 5 Islamic fundamentalism -- 5 September 11 Terrorist Attacks, 2001 5 History 4 Psychology 4 War on terrorism, 2001- 4 Congresses -- 3 International cooperation 3 Islam and politics -- 3 Jihad 3 Social aspects 3 World politics -- 3 Case studies 2 Child terrorists 2 Forecasting 2 Globalization -- 2 Government publications -- 2 International relations 2 Islamic fundamentalism 2 less ...