The term you are referring to is the "Iron Curtain." The Iron Curtain was a metaphorical boundary that represented the division between the Soviet Union and its Eastern European satellite states, such as East Germany, Poland, Hungary, and Czechoslovakia, from the Western European democracies. This division effectively separated the communist Eastern Bloc, under Soviet influence, from the capitalist West, in the aftermath of World War II. The Iron Curtain symbolized the ideological, political, and physical barriers that existed between these two opposing sides during the Cold War.
