Iron Curtain
Political boundary dividing Europe during the Cold War
The Iron Curtain was the political and physical boundary that divided Europe from the end of World War II in 1945 until the end of the Cold War in 1990/1991. East of the Iron Curtain were many small states aligned with the Soviet Union, in 1955 formally allied by the Warsaw Pact. Many nations to the west of this geopolitical divide were (and are) NATO members.
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