Key Questions
- What were the ideological differences between the US and the USSR by 1943?
- How did World War Two heighten tensions between the US and USSR?
- What caused the shift towards Cold War thinking by 1945?
What were the ideological differences between the US and the USSR by 1943?
- You may be required to explain how ideological factors led to the breakdown of the Grand Alliance.
- Ensure you can explain how ideological factors were already leading to the breakdown even before the end of World War Two.
1. Opposing economic systems
- The United States supported capitalism, free markets, and private enterprise.
- The Soviet Union promoted communism, a state-controlled economy, and the abolition of private property.
- Each side saw the other’s system as a threat to global stability and their own security
2. Contrasting political values
- The US valued liberal democracy, competitive elections, and individual freedoms.
- The USSR embraced a one-party state, controlled political expression, and justified repression as necessary for socialist transformation.
- Mutual suspicion grew as both sides believed the other sought to expand its ideological influence.
3. Mutual distrust rooted in interwar actions
- The US and other Western powers had intervened against the Bolsheviks during the Russian Civil War (1918–1920), leaving a legacy of Soviet mistrust.
- The US refusal to recognise the Soviet government until 1933 contributed to long-term tension.
- Stalin remained convinced that capitalist nations would ultimately attempt to undermine communism.
How did World War Two heighten tensions between the US and USSR?
1. The Second Front dispute
- Stalin demanded that the US and Britain open a Second Front in Western Europe as early as 1942 to relieve pressure on the Red Army.
- Churchill’s preference for a “soft underbelly” strategy through North Africa and Italy frustrated Stalin, who saw these delays as deliberate.
- The postponement until the D-Day landings in June 1944 deepened Soviet suspicion that the West hoped Germany would weaken the USSR.
2. Different strategic priorities
- The USSR focused on reclaiming lost territory and creating a buffer zone in Eastern Europe to prevent future invasions.
- The US prioritised a defeat of Nazi Germany followed by the establishment of a postwar order based on democratic principles and economic cooperation.
- These divergent aims led to disagreements on how to handle liberated territories.
3. Tensions over Poland
- Stalin insisted on having a pro-Soviet government in Poland to guarantee Soviet security.
- The US supported the Polish government-in-exile in London, hoping for free elections after the war.
- The Soviet Union’s refusal to compromise highlighted early postwar conflict over Eastern Europe’s future.
4. Allied conferences before Yalta
- At Tehran (1943):
- Stalin, Roosevelt, and Churchill met, revealing clear tensions beneath the cooperation.
- Stalin pushed hard for the Second Front and made territorial claims in Eastern Europe.
- The US showed willingness to work with the USSR, while Britain was more cautious of Soviet expansionism.
- Despite cooperation against Germany, the conference exposed underlying ideological and strategic distrust.
- The issue of postwar settlements
- The US promoted the idea of the United Nations, hoping it would encourage cooperation and prevent future conflict.
- Stalin feared such international structures would be used to contain Soviet influence.
- Preliminary debates foreshadowed later Cold War disagreements over global leadership and spheres of influence.
What caused the shift toward Cold War thinking (1944–45)?
1. Growing US concern about Soviet intentions
- Reports from Eastern Europe indicated that the USSR was installing friendly regimes and suppressing non-communist groups.
- US diplomats, including George Kennan, began warning that the USSR was seeking dominance rather than partnership.
2. Soviet fear of capitalist encirclement
- Stalin believed the West would eventually unite to limit Soviet power once the common enemy (Germany) was defeated.
- This fear drove aggressive Soviet policies in surrounding regions.
3. Breakdown of trust despite military alliance
- Although the nations were wartime allies, cooperation was fragile and tactical, not based on shared values.
- By early 1945, the US and USSR were already thinking in terms of postwar rivalry, setting the stage for the Cold War even before Yalta.
- How did the ideological differences between the United States and the Soviet Union shape their mutual distrust before and during World War II?
- Why did the delay in opening the Second Front create tension between the wartime allies, and how did this disagreement influence Soviet attitudes toward the West?
- In what ways did strategic disagreements over Eastern Europe, particularly Poland, contribute to the breakdown of trust leading into the early stages of the Cold War?


