Terrorism Prevention 28 Government policy 11 Terrorists 9 National security 8 Terrorisme 8 History 7 more ... Political violence 7 Violence 7 Foreign relations 6 Religious aspects 6 Bombing investigation 5 Counterinsurgency 5 Insurgency 5 Political aspects 5 Psychological aspects 5 Victims of terrorism 5 Attentats à la bombe 4 Bombings 4 Civil rights 4 Politics and government 4 September 11 Terrorist Attacks, 2001 4 Terrorismus 4 Guerrilla warfare 3 International relations 3 Pan Am Flight 103 Bombing Incident, 1988 3 Psychology 3 Security, International 3 Abortion 2 Achille Lauro Hijacking Incident, 1985 2 less ...