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Name five countries that were "behind the Iron Curtain" in the Cold War.
What are: Russia, Estonia, Latvia, Lithuania, Belarus, Moldova, Ukraine, Georgia, Azerbaijan, Armenia, Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan (all of these were formally part of the Soviet Union)
Under Moscow's influence, allies in the Warsaw Pact: Poland, Romania, Bulgaria, Czechoslovakia, Serbia, Hungary