Government policy Terrorism Prevention 40 National security 15 Foreign relations 14 War on terrorism, 2001- 13 History 6 Intelligence service 6 September 11 Terrorist Attacks, 2001 6 Military policy 5 United States 5 Cross-cultural studies 4 Jihad 4 Counterinsurgency 3 Psychological aspects 3 Qaida (Organization) 3 War on Terrorism, 2001- 3 Civil defense 2 Civil rights 2 International cooperation 2 Iraq War, 2003- 2 Law and legislation 2 Nuclear terrorism 2 Politics and government 2 Prisoners of war 2 Psychology 2 Special operations (Military science) 2 Terrorists 2 Thesis 2 Abuse of 1