The Soviet Union's establishment of communist governments in Eastern Europe, viewed as a buffer zone for security, was seen by the West as an aggressive expansion of Soviet influence. The ascension of Mikhail Gorbachev to power in the Soviet Union was a critical turning point.
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While the alliance between the United States, Great Britain, and the Soviet Union held to defeat Nazi Germany, deep ideological differences and mutual suspicion began to fracture the partnership almost immediately. This wave of change was largely driven by internal populations, emboldened by Gorbachev's refusal to intervene militarily, a stark contrast to past Soviet actions in Hungary (1956) and Czechoslovakia (1968).
The Collapse of the Eastern Bloc The popular revolutions across Eastern Europe in 1989 stand as the most visible symbol of the Cold War's end. These periods of coexistence demonstrated that the rivalry was complex, involving not just military competition but also struggles for ideological and economic supremacy across the globe.
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This period, often defined more by a climate of tension than by direct military conflict between the superpowers, shaped international relations for nearly half a century. Formalizing the Bipolar World By the late 1940s, the Cold War had solidified into a clear bipolar world order.
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