Terrorism -- 180 Terrorism 85 Prevention 68 Politics and government -- 29 Politics and government 27 Prevention -- 27 History 26 more ... Foreign relations -- 25 Islam 25 Prevention. -- 25 National security -- 24 Religious aspects -- 24 Security, International 24 War on Terrorism, 2001-2009 22 World politics -- 22 History -- 21 Terrorists -- 21 International relations 18 Psychological aspects 18 Islam and politics -- 16 Jihad 16 Government policy -- 15 Foreign relations 14 Economic aspects 13 Islam -- 13 Military policy 12 Government policy 11 International cooperation 11 Islam and politics 11 Psychology 11 less ...