Terrorism 1,520 Prevention 641 War on Terrorism, 2001-2009 335 History 257 Government policy 197 Politics and government 191 Religious aspects 166 more ... National security 159 Foreign relations 138 Islam 138 September 11 Terrorist Attacks, 2001 118 Law and legislation 105 Political aspects 100 Terrorists 93 Social aspects 92 Islamic fundamentalism 81 Jihad 70 Psychological aspects 69 Security measures 66 State-sponsored terrorism 63 Political violence 61 Civil rights 53 Intelligence service 53 Military policy 53 Violence 52 Iraq War, 2003-2011 49 Security, International 49 Human rights 48 International cooperation 47 Influence 45 less ...