Military policy War on terrorism, 2001- Foreign relations -- 3 History -- 2 Iraq War, 2003- 2 Persian Gulf War, 1991 2 Balance of power 1 more ... Capitalism -- 1 Conservatism -- 1 Homeland security 1 Imperialism 1 Infrastructure -- 1 National security -- 1 Political aspects 1 Prevention 1 Safety measures 1 Security Management 1 Security measures 1 Terrorism -- 1 Transportation -- 1 United States 1 less ...