Terrorism -- 532 Terrorism 270 Prevention 122 Foreign relations -- 96 Islam 81 Religious aspects -- 78 Prevention -- 77 more ... National security -- 64 Politics and government -- 56 Government policy -- 53 War on terrorism, 2001- 50 History -- 44 War on Terrorism, 2001-2009 42 Terrorists -- 39 September 11 Terrorist Attacks, 2001 37 World politics -- 36 Prevention. -- 35 Jihad 28 Psychological aspects 26 History 25 International relations 25 Security, International 25 Military policy 24 Islam and politics -- 23 Political aspects 23 Politics and government 23 International cooperation 21 Islamic fundamentalism 21 Islamic fundamentalism -- 19 Foreign relations 18 less ...