Terrorists Terrorism 57 Religious aspects 21 Islam 20 Prevention 17 Psychology 15 Terroristes 10 more ... History 9 Radicalism 9 Psychological aspects 8 Recruiting 8 Politics and government 7 Terrorisme 7 Jihad 6 War on Terrorism, 2001-2009 6 Islamic fundamentalism 5 Political aspects 5 Assassins 3 Government policy 3 Psychologie 3 Radicalization 3 Suicidal behavior 3 Suicide bombings 3 Victims of terrorism 3 American fiction 2 Aspect psychologique 2 Assassination 2 Group identity 2 Legal status, laws, etc 2 Muslims 2 less ...