Terrorism -- Prevention 72 Islam 43 Religious aspects -- 43 Terrorism 40 Prevention -- 29 Prevention. -- 29 more ... Government policy -- 25 War on Terrorism, 2001-2009 24 Terrorists -- 21 Politics and government -- 20 Psychological aspects 19 Foreign relations -- 18 National security -- 18 September 11 Terrorist Attacks, 2001 14 History 13 History -- 13 Islam and politics -- 13 Islamic fundamentalism 13 Jihad 11 Government policy 10 Islamic fundamentalism -- 10 Psychology 10 International cooperation 9 Security measures 9 Social aspects 7 War -- 7 Weapons of mass destruction 7 World politics -- 7 Economic aspects 6 less ...