Terrorism -- 255 Terrorism 98 Prevention 78 Politics and government -- 71 Islam 70 History -- 59 Religious aspects -- 58 more ... Politics and government 54 History 52 Foreign relations -- 49 Islam -- 44 Islam and politics -- 44 War on Terrorism, 2001-2009 42 National security -- 38 Prevention. -- 33 Terrorists -- 30 World politics -- 30 Government policy -- 28 Prevention -- 28 Jihad 27 Security, International 27 Islamic fundamentalism 25 Foreign relations 23 September 11 Terrorist Attacks, 2001 20 International relations 19 Military policy 19 Muslims -- 19 Psychological aspects 19 Islamic fundamentalism -- 17 Islam and politics 16 less ...