Terrorism -- 65 Terrorism 43 Prevention 21 Foreign relations -- 13 Religious aspects -- 12 Islam 11 Prevention -- 10 more ... Politics and government -- 9 Terrorists -- 9 History -- 8 War on terrorism, 2001- 8 Psychological aspects 7 National security -- 6 September 11 Terrorist Attacks, 2001 6 World politics -- 6 Government policy -- 5 History 5 Islamic fundamentalism -- 5 Islam and politics -- 4 Jihad 4 Military policy 4 Psychology 4 Security, International 4 Case studies 3 Congresses -- 3 Globalization 3 Globalization -- 3 Government publications -- 3 International cooperation 3 International relations 3 less ...