Terrorism -- 76 Foreign relations -- 39 Prevention. -- 29 War on Terrorism, 2001-2009 29 Politics and government -- 21 National security -- 18 Government policy -- 17 more ... Military policy 14 September 11 Terrorist Attacks, 2001 14 History -- 12 Islam 11 Prevention 11 Prevention -- 10 Religious aspects -- 10 Terrorism 9 World politics -- 9 Islamic fundamentalism 8 Civil defense -- 7 Intelligence service -- 7 Iraq War, 2003-2011 7 Armed Forces -- 6 Jihad 6 September 11 Terrorist Attacks, 2001 -- 6 Terrorists -- 6 Defenses 5 History 5 Islam and politics -- 5 Muslims -- 5 Relations -- 5 Security measures 5 less ...