Cold War: Key Events and Concepts

Immediate Transition: The relationship between the Allies quickly deteriorated post-WWII, leading to conflict in Europe.
Allies Breakdown: Tensions began before WWII ended, particularly after it became clear Germany would lose.
The Big Three: Stalin, Churchill, and Roosevelt (and later Truman) met during the war to discuss post-war plans, leading to the Yalta Conference.

Context: Germany's defeat was certain; the West had to manage the Soviet occupation of Eastern Europe.
Stalin's Demands: Wanted a buffer zone for security against the West, expecting resources and military advantage.
Mixed Outcomes:
- Roosevelt favored self-determination over spheres of influence.
- Agreement on the “Declaration of Liberated Europe” for free elections.
Conflicts on Germany's Future:
- Division into four occupation zones; France included per Churchill's insistence.
- $20 billion in reparations agreed upon.
Poland's Provisional Government: A compromise between communist exiles and non-communists, leading to future tensions.

Leadership Changes: Truman took Roosevelt's place after his death.
Division Focus: Finalizing Germany's division.
Tensions Arise:
- Truman demanded free elections; Stalin insisted on security against anti-Soviet governments.
- Truman's atomic bomb knowledge reinforced his stance.
Stalemate Realization: Western powers recognized they could not change Soviet control without causing war.

Deteriorating Relations: Cooperation only existed during the shared enemy of Nazis.
Discontent:
- Soviets unhappy with lack of Lend-Lease aid and loans from the US, viewing it as intentional weakness.
- The US criticized Soviet actions in Eastern Europe for not adhering to the Yalta agreement.

Conflicting Ideologies: Post-war, the US and USSR had divergent views on security and governance.
Creation of Eastern Bloc: Countries like Poland and Romania fell under Soviet control, solidifying Stalin's influence.
Churchill’s Iron Curtain Speech (1946): Symbolized the ideological divide and mistrust that defined the period.

US Involvement in Greece: Civil war between communists and anti-communists prompted US action following British withdrawal.
Truman Doctrine: US would financially support any nation threatened by communism, aligning with containment policy.
Financial Support: $400 million to Greece and Turkey; Greece avoided communist control by 1949.

Kennan's Doctrine: Described the necessity of containing communism’s spread globally.
Berlin Blockade (1948-1949): A significant test of this policy where Western Allies airlifted supplies to West Berlin during Stalin's blockade.

Denazification Policy: Removal of Nazi influences from German governance; faced significant challenges.
Complexity of Implementation: Many Nazis retained positions due to Cold War dynamics; the focus shifted towards opposing communism.

Four-Zone Occupation: Unity in initial occupation, but divergence emerged; especially in how the Soviets exploited their zone.
West Berlin Survivors: Western Allies merged to create West Germany in June 1948, which further aggravated tensions.

Economic Recovery Aid: $13 billion for European reconstruction; counteracting the aftermath of the war.
Stalin’s Rejection: Soviet Union refused aid, promoting the Molotov Plan instead.

Atomic Tensions: The successful Soviet detonation of an atomic bomb in 1949 escalated the arms race.
Mutually Assured Destruction (MAD): Both sides expanded arsenals to deter attacks, creating a precarious balance.

NATO Formation (1949): Western military alliance comprising multiple nations for mutual defense.
Warsaw Pact (1955): USSR’s response solidifying control over Eastern Europe and reinforcing the split.
Conclusion: Europe was once again divided, reflecting the ongoing hostilities and tensions akin to the two World Wars.