Terrorism -- 479 Terrorism 243 Prevention 113 Islam 76 Religious aspects -- 74 Foreign relations -- 72 Prevention -- 69 more ... Government policy -- 53 War on terrorism, 2001- 46 War on Terrorism, 2001-2009 42 National security -- 41 History -- 40 Politics and government -- 39 Terrorists -- 38 Prevention. -- 34 World politics -- 31 September 11 Terrorist Attacks, 2001 30 Jihad 26 Psychological aspects 26 History 22 Islam and politics -- 21 Political aspects 19 Government policy 17 International cooperation 17 Islamic fundamentalism -- 17 Military policy 17 Political aspects -- 17 Islamic fundamentalism 16 Security, International 16 Foreign relations 15 less ...