Yalta and Potsdam conferences (AQA GCSE History): Revision Notes
Yalta and Potsdam conferences
The wartime alliance under strain
As World War Two neared its end in 1945, the three major Allied powers - Britain, the USA, and the Soviet Union - needed to decide how to shape the post-war world. The Grand Alliance, which had successfully worked together to defeat Nazi Germany, met at two crucial conferences that would reveal growing tensions and set the stage for the Cold War.
Timeline of key events
- September 1939 - Outbreak of WWII
- June 1941 - Nazi invasion of USSR begins
- December 1941 - Japanese attack on Pearl Harbour; USA enters the war
- June 1944 - Allied invasion of Normandy (D-Day)
- February 1945 - Yalta Conference
- April 1945 - US President Roosevelt dies
- May 1945 - Germany surrenders
- June 1945 - UN established
- July 1945 - Churchill replaced by Clement Attlee
- July-August 1945 - Potsdam Conference
- September 1945 - Japan surrenders; end of WWII
Yalta conference - February 1945
The Yalta Conference took place while the war was still ongoing, which influenced the cooperative spirit between the three leaders: Roosevelt (USA), Churchill (Britain), and Stalin (USSR). The leaders made several important agreements about the post-war world.
The timing of Yalta was crucial - with the war still raging, the three Allied powers were still united by their common goal of defeating Nazi Germany. This shared purpose created a more cooperative atmosphere compared to what would follow at Potsdam.
Key agreements at Yalta
The conference established that defeated Germany would face significant consequences. The country would be substantially reduced in size, divided among the victorious powers, and forced to pay massive reparations totaling $20 billion, with half going directly to the Soviet Union to compensate for their enormous wartime losses.
Europe's reconstruction would follow the principles established in the 1941 Atlantic Charter, meaning that liberated countries would be allowed to hold democratic elections to choose their governments. However, this principle would later become a major source of disagreement.
The leaders also planned for international cooperation through the establishment of the United Nations, though only Russia and two other Soviet republics would initially join as members alongside the other major powers.
A crucial agreement involved Poland's future. The country would fall within the Soviet "sphere of influence" but was supposed to maintain a democratic government. The Soviet Union also promised to join the war against Japan once Germany was defeated, which was seen as essential for ending the Pacific War.
Emerging tensions
Even at Yalta, some tensions were beginning to surface. Stalin's interpretation of "democratic government" in Poland differed significantly from what Britain and America had in mind, and the division of influence in Eastern Europe would soon become problematic.
Change in leadership
Between the two conferences, significant leadership changes occurred that would affect the relationship between the Allied powers. President Roosevelt, who had worked closely with Stalin and believed in post-war cooperation, died in April 1945. His successor, Harry S. Truman, had little experience in foreign affairs and was much more suspicious of Soviet intentions from the start.
The leadership changes between Yalta and Potsdam were critical to the breakdown of the wartime alliance. Roosevelt's death removed a leader who believed in cooperation with Stalin, replacing him with Truman who was immediately suspicious of Soviet motives. This shift in American leadership marked a turning point in East-West relations.
Truman was particularly concerned about growing Soviet influence in Eastern Europe and believed Stalin was more interested in using force than genuine cooperation. Meanwhile, in Britain, Winston Churchill was replaced by Clement Attlee of the Labour Party following a general election. Attlee accepted that Britain was no longer the dominant world power and saw maintaining close ties with the USA as essential for British security.
As one source noted: "With the war won, and his Red Army in Europe, Stalin was less willing to compromise."
Potsdam conference - July-August 1945
By the time of the Potsdam Conference, the war in Europe had ended, and the differences between the former allies had become much more apparent. The atmosphere was noticeably more tense than at Yalta.
The end of the war fundamentally changed the dynamic between the Allied powers. Without the unifying threat of Nazi Germany, each nation began to focus more on their own post-war interests rather than collective cooperation.
Key decisions at Potsdam
The conference established practical arrangements for governing defeated Germany. A Council of Foreign Ministers would oversee the rebuilding of Europe, while the Nazi Party was banned and war criminals would face prosecution for their crimes.
Germany was formally divided into four zones of occupation, controlled by Britain, France, the USA, and the USSR respectively. The capital city of Berlin would also be divided among these four powers, despite being located deep within the Soviet zone.
The Soviet Union was granted 25% of the industrial output from the other three occupied zones, reflecting their massive contribution to victory and the destruction they had suffered during the war.
Growing disagreements
The tensions that had been simmering since Yalta became much more obvious at Potsdam. While the three powers had been able to work together effectively to defeat Germany, they now had very different visions for the future of Europe and Eastern Europe in particular. The spirit of wartime cooperation was clearly breaking down as each power began to prioritise their own national interests over collective security.
Consequences and significance
The Yalta and Potsdam conferences marked both the high point of Allied cooperation and the beginning of its breakdown. While the conferences successfully established the framework for post-war Europe, they also revealed fundamental disagreements about democracy, security, and influence that would soon develop into the Cold War.
The leadership changes between the conferences were particularly significant, as Roosevelt's death brought a much more confrontational American approach to Soviet relations. The agreements made at these conferences would shape European politics for the next forty years, with the division of Germany becoming a symbol of the broader East-West split.
The irony of these conferences is that while they successfully planned the defeat of fascism, they simultaneously laid the groundwork for the ideological division that would define the second half of the 20th century.
Key Points to Remember:
- Yalta (February 1945) occurred during wartime and showed more cooperation, while Potsdam (July-August 1945) occurred after victory and revealed growing tensions
- Leadership changes between conferences were crucial - Truman replaced Roosevelt and was much more suspicious of Stalin
- Germany was divided into four occupation zones, with the USSR receiving substantial reparations and industrial output
- Poland's fate was agreed at Yalta but would become a major source of disagreement about what "democratic government" meant
- The conferences marked the transition from wartime alliance to Cold War rivalry, as different visions for post-war Europe became apparent