Terrorists -- Terrorism -- 24 Psychology 12 Psychological aspects 10 Prevention 7 Terrorism 6 Jihad 4 more ... Prevention. -- 4 Biography -- 3 Government policy -- 3 Case studies 2 Communism -- 2 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 Soldiers -- 2 War -- 2 War and emergency powers -- 2 War on Terrorism, 2001-2009 2 Accidents 1 less ...