Prevention -- Terrorism -- 7 Government policy -- 4 Civil defense -- 2 Economic sanctions, American 2 Emergency management -- 2 Foreign relations -- 2 more ... Politics and government 2 Relations 2 Case studies 1 Citizen participation -- 1 Defenses 1 Embassy buildings -- 1 Government policy 1 National security -- 1 Politics and government -- 1 Security measures -- 1 Self-defense -- 1 September 11 Terrorist Attacks, 2001 1 Terrorism 1 Terrorists -- 1 War on terrorism, 2001- 1 less ...