Terrorism -- 21 Terrorism 13 Prevention 9 History -- 8 Foreign relations -- 7 Prevention -- 7 Security, International 7 more ... Foreign relations 6 World politics -- 6 International relations 5 Politics and government 5 Globalization 4 National security -- 4 Terrorists -- 4 International cooperation 3 Islam -- 3 Islam and politics -- 3 Military policy 3 Politics and government -- 3 Psychological aspects 3 Psychology 3 Religious aspects -- 3 Ambassadors -- 2 Case studies 2 Congresses 2 Congresses -- 2 Economic conditions -- 2 Globalization -- 2 Government policy -- 2 Islam 2 less ...