Worlds Apart: The Birth of the Cold War

Worlds Apart: The Birth of the Cold War

In the spring of 1945, the world stood at the threshold of an unprecedented hope. The Nazi war machine had crumbled under the combined might of the Allied powers, and in the ruins of Berlin, American and Soviet soldiers would famously toast each other in celebration. Photographs of this fraternization became icons of wartime alliance—images that would later seem almost wistful in their optimism, haunting reminders of a cooperation that would prove as fleeting as it was necessary. Less than two years later, in March 1947, President Harry S. Truman would stand before a joint session of Congress and declare that the world was divided into two ways of life, and that the United States must support "free peoples" resisting "attempted subjugation by armed minorities or by outside pressures." The Iron Curtain had descended, and with it, a conflict that would define the second half of the twentieth century had begun.

Yet this dramatic transformation—from allied cooperation to existential confrontation in less than twenty-four months—demands explanation. The Cold War did not emerge from a vacuum, nor was it the inevitable product of ancient hatreds or immutable geopolitical laws. It was constructed, piece by piece, through decisions made by identifiable leaders facing comprehensible choices under conditions of profound uncertainty. Understanding how this construction unfolded, why it proved so difficult to reverse, and what it meant for the millions caught between the competing visions of Washington and Moscow—this is the central task of this book, and it begins here, at the end of the Second World War.

The Alliance of Necessity

The partnership between the United States, the Soviet Union, and Great Britain during World War II was always more a marriage of convenience than one of affection. When the German invasion of the Soviet Union began on June 22, 1941, Winston Churchill responded with characteristic rhetorical flourish: "If Hitler invaded hell, I would at least make a favorable reference to the Devil in the House of Commons." Yet even Churchill's effusive support for his new Soviet ally came tempered by the recognition that decades of Western intervention in Russia—from the Allied intervention during the civil war to the persistent refusal to recognize the legitimacy of the Bolshevik government—had left deep scars on Soviet memory. The Anglo-American decision to open a second front in Western Europe, so eagerly desired by Stalin and so long delayed, would become a persistent source of Soviet resentment, interpreted through the lens of earlier Western betrayals.

The grand alliance was cemented at a series of conferences that established the framework for postwar cooperation. At Tehran in November-December 1943, the "Big Three"—Roosevelt, Churchill, and Stalin—met for the first time together, establishing the principle that the postwar settlement would be determined by the great powers working in concert. The subsequent Yalta conference in February 1945 would prove even more significant, as the three leaders attempted to carve out the contours of the emerging peace. Roosevelt, weakened by illness and genuinely committed to the ideal of great power cooperation, sought to bring the Soviet Union into a partnership that would undergird a new system of international organization. The agreements reached at Yalta—on the division of Germany, the establishment of the United Nations, and the status of Eastern Europe—would later become intensely controversial, with critics arguing that Roosevelt conceded too much to Stalin and defenders insisting that these arrangements represented the best achievable balance between American ideals and Soviet security concerns.

What is often forgotten in retrospective accounts that treat Yalta as a sellout or a diplomatic triumph is how genuinely uncertain the situation remained. The Red Army occupied most of Eastern Europe, but the full implications of this military reality for the postwar settlement had not yet been fully worked out. The percentage agreements dividing spheres of influence, the debates over free elections in Poland, the negotiations over Reparations—these were all contested issues, subject to further bargaining and subject to change as military realities shifted. The atomic bomb had not yet been used; its dramatic appearance in August 1945 would transform the strategic calculus in ways that the Yalta negotiators could not have anticipated.

Potsdam: The Last Illusions

The Potsdam conference, held from July 17 to August 2, 1945, in the suburbs of Berlin, represents the last gathering of the Allied leadership during which serious attempts at cooperative postwar planning were undertaken. By the time the delegations assembled, the military situation had been transformed utterly. Germany had surrendered unconditionally on May 8, V-E Day. The atomic bombs had been dropped on Hiroshima on August 6 and Nagasaki on August 9, bringing Japan's surrender and with it the end of the Pacific war on September 2. The Soviet Union had entered the war against Japan on August 8, 1945, securing its position in the Far East and adding another layer to the complex negotiations underway in Germany.

The conference produced agreements on a range of issues: the treatment of Germany, the boundaries of Poland, the administration of Austria, the terms of Japanese surrender. But even as these technical negotiations proceeded, the underlying divergence in perspectives had become increasingly apparent. Roosevelt had died on April 12, 1945, and been succeeded by Harry Truman, a man far less committed to personal diplomacy with Stalin and far more skeptical of Soviet intentions. Churchill had been replaced mid-conference by Clement Attlee, whose Labour government would prove no more accommodating to Soviet demands. And Stalin, the survivor of countless political battles and the architect of Soviet industrial power, approached the negotiations with a clear sense of Soviet interests and no particular sentimentality about Western concerns.

The famous incident at Potsdam—Truman's informaton to Stalin about the successful test of the atomic bomb—has been subject to endless interpretation. The standard narrative holds that Truman casually mentioned the weapon to Stalin, who received the news with apparent unconcern. Some historians argue that Stalin immediately grasped the implications and set about accelerating Soviet atomic development; others suggest that the casualness of the exchange reflected Stalin's characteristic inscrutability rather than genuine comprehension. Whatever the case, the atomic age had arrived, and with it a new dimension in the great power relationship that would reshape the entire trajectory of the postwar settlement.

The final communiqué from Potsdam spoke of the determination to continue the wartime cooperation through the peace and beyond, to create the conditions for a peaceful and prosperous world. These fine words would prove to be among the last expressions of Allied unity. Within months, the cooperation that had won the war would begin to unravel, undone by accumulating grievances, divergent interests, and a fundamental clash of visions for the postwar world.

Churchill's Iron Curtain

On March 5, 1946, Winston Churchill delivered what would become one of the most famous speeches of the twentieth century at Westminster College in Fulton, Missouri. Introduced by President Truman and speaking in the aftermath of British electoral defeat that had ended his prime ministry, Churchill delivered a stark assessment of the European situation. "From Stettin in the Baltic to Trieste in the Adriatic," Churchill declared, "an iron curtain has descended upon the Continent." Behind that line of communication lay all the capitals of the ancient states of Central and Eastern Europe—Warsaw, Berlin, Prague, Vienna, Budapest, Belgrade, Bucharest, Sofia, and Sofia, Sofia. These citi