Terrorism -- Prevention 70 Terrorism 50 Prevention -- 32 Prevention. -- 23 Islam 21 Religious aspects -- 21 more ... Government policy -- 17 History 16 Psychological aspects 16 War on Terrorism, 2001-2009 16 National security -- 15 Terrorists -- 14 Foreign relations -- 11 Government policy 11 International cooperation 9 Politics and government -- 9 History -- 8 Psychology 8 Security measures 8 Social aspects 8 Islamic fundamentalism -- 7 Jihad 7 Politics and government 7 September 11 Terrorist Attacks, 2001 7 Economic aspects 6 Political aspects 6 Weapons of mass destruction 6 Finance 5 Religious aspects 5 less ...