Foreign relations -- World politics -- 4 Cold War 3 Forecasting -- 3 Security, International 2 21st century 1 Alliances 1 more ... Causes 1 Developing countries -- 1 Economic history -- 1 Economic policy -- 1 Forecasts 1 Foreign relations administration 1 Hagemony -- 1 History -- 1 International agencies 1 International organization 1 Military 1 Moral and ethical aspects 1 National characteristics, American 1 National security -- 1 Nationalism -- 1 Nuclear non-proliferation 1 Persian Gulf War, 1991 1 Philosophy 1 September 11 Terrorist Attacks, 2001 -- 1 Twenty-first century -- 1 less ...