Terrorism -- Prevention 21 Terrorism 18 Prevention -- 10 Religious aspects -- 9 Terrorists -- 9 Islam 8 more ... Foreign relations -- 7 History -- 7 Psychological aspects 7 Politics and government -- 6 Government policy -- 5 Islamic fundamentalism -- 5 September 11 Terrorist Attacks, 2001 5 Congresses -- 4 History 4 Psychology 4 War on terrorism, 2001- 4 International cooperation 3 Islam and politics -- 3 Jihad 3 National security -- 3 Social aspects 3 World politics -- 3 Case studies 2 Child terrorists 2 Congresses 2 Forecasting 2 Globalization -- 2 Government publications -- 2 less ...