Terrorism -- 17 History -- 13 Foreign relations -- 9 Politics and government -- 8 Security, International 7 Terrorism 7 World politics -- 7 more ... Prevention 6 Prevention -- 6 Politics and government 5 Foreign relations 4 History 4 International relations 4 Islam -- 4 Islam and politics -- 4 National security -- 4 Religious aspects -- 4 Globalization 3 International cooperation 3 War on terrorism, 2001- 3 Biography -- 2 Case studies 2 Congresses -- 2 Economic conditions -- 2 Globalization -- 2 Islam 2 Islamic fundamentalism -- 2 Military art and science -- 2 Military history, Modern -- 2 Military policy 2 less ...