Terrorists -- Terrorism -- 22 Psychology 10 Psychological aspects 9 Prevention 7 Terrorism 6 Jihad 4 more ... Prevention. -- 4 Government policy -- 3 Detention of persons -- 2 Executive power -- 2 Islam 2 Islamic fundamentalism 2 Islamic fundamentalism -- 2 Legal status, laws, etc -- 2 Lockerbi -- 2 National security -- 2 Politics and government -- 2 Prevention -- 2 Religious aspects -- 2 Social conflict -- 2 Social networks 2 War and emergency powers -- 2 War on Terrorism, 2001-2009 2 Accidents 1 Aeronautics 1 Aeronautics -- 1 Athletes -- 1 Biography -- 1 Biological warfare -- 1 less ...