Foundations of Division: The Cold War's Origins, 1945-1947

Foundations of Division: The Cold War's Origins, 1945-1947

The destruction of Nazi Germany and Imperial Japan in 1945 presented the world with an extraordinary paradox: the victorious powers who had forged an unprecedented military coalition to defeat the totalitarian Axis found themselves within three years locked in an ideological struggle that would define the latter half of the twentieth century. The Grand Alliance that had brought together the United States, the Soviet Union, and the United Kingdom against Adolph Hitler's Germany and Tojo Hideki's Japan was, in retrospect, a marriage of convenience rather than genuine partnership. Yet the speed and depth of its dissolution caught many contemporaries by surprise, suggesting that even those closest to the events of 1945-1947 failed to fully grasp the fundamental incompatibilities that had always strained the wartime cooperation. This chapter examines the origins of the Cold War, tracing how the wartime alliance crumbled and how the divergent visions held by Washington and Moscow for the postwar world crystallized into the bipolar structure that would characterize international politics for the next four decades.

The period from 1945 to 1947 represents what historians have termed the "emergence" or "crystallization" of the Cold War—a process rather than a single event, marked by accumulating tensions, misperceptions, and conflicting interests that transformed former allies into adversaries. Understanding this transformation requires attention to multiple dimensions: the ideological incompatibility between American liberal internationalism and Soviet revolutionary Marxism-Leninism; the security concerns that drove both superpowers to seek spheres of influence; the economic imperatives that shaped their approaches to European reconstruction; and the domestic political pressures that constrained the policy options available to each side's leadership. By examining these interrelated factors, this chapter establishes the foundations upon which the subsequent chapters of this volume build their analysis of Cold War developments.

The Wartime Alliance and Its Structural Limitations

The Grand Alliance, formally constituted through the Declaration by United Nations in January 1942, united twenty-six nations in opposition to the Axis powers. At its core, however, lay a tripartite relationship among the United States, the Soviet Union, and the United Kingdom—a partnership that always contained within it the seeds of its own dissolution. Understanding these structural limitations is essential for comprehending why victory in 1945 so rapidly gave way to confrontation in 1947.

The wartime cooperation between the Western Allies and the Soviet Union rested upon a foundation of pragmatic necessity rather than ideological affinity. For the Soviet Union, the alliance represented a tactical alliance with capitalist powers that Lenin and Stalin had long predicted would eventually turn on each other. Soviet foreign policy, shaped by the Bolshevik revolutionary experience and Stalin's paranoid suspicion of Western intentions, viewed international relations through the lens of class struggle and power politics. The capitalist democracies were not trusted partners but temporary allies whose assistance was necessary to defeat the immediate threat from Nazi Germany. As Soviet Foreign Minister Vyacheslav Molotov reportedly stated, the alliance was "temporary and opportunistic, not a genuine convergence of interests."

American and British policymakers, for their part, approached the alliance with their own set of assumptions and objectives. President Franklin D. Roosevelt envisioned a postwar order organized around the principles of the Atlantic Charter—a vision of open markets, free trade, self-determination, and international cooperation through a revived League of Nations. This liberal internationalist framework assumed that the wartime cooperation could be channeled into permanent peace through economic interdependence and collective security. Secretary of State Cordell Hull spoke of the "spherical" nature of American foreign policy, implying that economic cooperation would transcend ideological divisions.

The strategic context of the war itself created dependencies and tensions that would later prove corrosive to the alliance. The Soviet Union bore the overwhelming burden of ground combat against Germany from 1941 to 1944, suffering losses that contemporary estimates placed at approximately twenty-seven million Soviet citizens killed. This sacrifice earned the USSR a legitimate claim to a major role in determining the postwar settlement, particularly regarding Eastern Europe. American and British leaders, while grateful for Soviet military contributions, increasingly worried about Soviet postwar intentions as the Red Army advanced westward. The question of "what kind of Europe" would emerge from the war—who would govern Poland, what would happen to Germany, how would the Balkans be organized—divided the allies even as they continued military cooperation against the common enemy.

Churchill's Iron Curtain Speech

Churchill delivered his famous "Sinews of Peace" address at Westminster College in Fulton, Missouri, on March 5, 1946.

From Stettin in the Baltic to Trieste in the Adriatic, an iron curtain has descended across the Continent. Behind that line lie all the capitals of the ancient states of Central and Eastern Europe. Warsaw, Berlin, Prague, Vienna, Budapest, Belgrade, Bucharest and Sofia, all these famous cities and the populations around them lie in what I must call the Soviet sphere, and all are subject, in one form or another, not only to Soviet influence but to a very high and in some cases increasing measure of control from Moscow.

Churchill's speech crystallized in public discourse what many had been reluctant to name directly—the division of Europe into spheres of influence that had emerged from the wartime settlements. The phrase "iron curtain" itself was not new; it had appeared in Nazi propaganda and had been used by others before Churchill. What distinguished the Fulton address was its timing, its source (a wartime ally of Stalin speaking in the United States), and its explicit characterization of Soviet actions as expansionist. The speech provoked immediate condemnation from Moscow and divided American opinion between those who saw Churchill as a prescient warning and those who viewed his remarks as unnecessarily provocative.

The immediate context for Churchill's speech was the consolidation of Soviet control in Eastern Europe during 1945-1946. The governments established in Poland, Romania, Bulgaria, and Hungary—ostensibly coalition or "Popular Front" governments—were in reality dominated by communist parties acting under Soviet direction. Non-communist politicians were systematically excluded or intimidated; opposition parties were suppressed; and free elections, promised at Yalta, failed to materialize. Churchill's speech gave these developments a name and a narrative framework that resonated powerfully in Washington and London.

Churchill's speech must be understood within the context of his own political position and the shifting dynamics of Anglo-American relations. Having lost the British general election in July 1945, Churchill was no longer prime minister but remained a major figure in British politics and an influential voice in transatlantic relations. His speech, delivered with Truman's apparent approval, reflected growing concern in British policy circles about Soviet expansionism but also served Churchill's personal political interests in repositioning himself as a champion of anti-communist vigilance.

The reaction to Churchill's speech demonstrated the extent to which American and British elites had already begun to think in terms of Soviet threat. Stalin's angry response, delivered through Pravda, characterized Churchill's speech as "a call to war with the Soviet Union" a