Terrorism -- 528 Terrorism 260 Prevention 118 Foreign relations -- 91 Islam 77 Prevention -- 77 Religious aspects -- 75 more ... National security -- 63 Politics and government -- 54 Government policy -- 53 War on terrorism, 2001- 50 History -- 44 War on Terrorism, 2001-2009 42 Terrorists -- 39 September 11 Terrorist Attacks, 2001 36 World politics -- 36 Prevention. -- 35 Psychological aspects 26 Security, International 25 Military policy 24 Jihad 23 Political aspects 23 History 22 Islam and politics -- 22 Politics and government 22 International cooperation 21 International relations 21 Islamic fundamentalism 18 Islamic fundamentalism -- 18 Foreign relations 17 less ...