Which of the following explains why Western Europe leaders claimed that certain European countries were behind an Iron Curtain following world war 2?

To many historians considering the aftermath of World War II, the division of Europe was inevitable, because, they believe, Soviet leader Josef Stalin was eager for communism to sweep the continent. But Stanford historian Norman Naimark disagrees.

Iron Curtain: The Iron Curtain depicted as a black line. Warsaw Pact countries on one side of the Iron Curtain appear shaded red; NATO members on the other shaded blue; militarily neutral countries shaded gray. The black dot represents Berlin. Yugoslavia, although communist-ruled, remained largely independent of the two major blocs and is shaded green. Communist Albania broke off contacts with the Soviet Union in the early 1960s, aligning itself with the People’s Republic of China after the Sino-Soviet split; it appears stripe-hatched with grey.

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