Terrorism Terrorism -- 62 Prevention 26 World politics -- 10 Prevention -- 9 Security, International 8 Terrorists 8 more ... History 7 Political violence 6 Terrorists -- 6 Forecasting 5 International relations 5 War on terrorism, 2001- 5 Weapons of mass destruction 5 Foreign relations -- 4 Radicalism 4 September 11 Terrorist Attacks, 2001 4 Foreign relations 3 Government policy -- 3 Guerrilla warfare 3 History -- 3 International cooperation 3 National security -- 3 Religious aspects 3 Social conflict 3 Suicide bombers 3 War on Terrorism, 2001-2009 3 Biological weapons 2 Chemical weapons 2 Crisis management 2 less ...