War on terrorism, 2001- Terrorism -- 3 Foreign relations -- 2 September 11 Terrorist Attacks, 2001 2 Balance of power 1 Capitalism -- 1 Conservatism -- 1 more ... Electronic surveillance -- 1 Government policy -- 1 Imperialism 1 International relations 1 Military policy 1 National security 1 Political aspects 1 Political aspects -- 1 Political culture -- 1 Political stability 1 Privacy, Right of -- 1 Security, International 1 Social aspects -- 1 Social control -- 1 Weapons of mass destruction 1 less ...