Operation Unthinkable: Churchill’s Secret Plan to Attack the Soviet Union
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13m
On 8 May 1945, Europe celebrates victory over Nazi Germany. But behind the scenes, a new fear is already taking shape.
British Prime Minister Winston Churchill, deeply distrustful of Joseph Stalin and Soviet ambitions in Eastern Europe, secretly orders the creation of a bold and dangerous plan—Operation Unthinkable.
The proposal envisions a surprise Allied attack against the Soviet Union, aiming to push the Red Army out of Poland and reshape the post-war balance of power. It even considers the unthinkable: rearming former German forces to fight alongside the West.
But the reality is stark. Soviet forces outnumber the Allies, American priorities shift to the Pacific, and the risk of a new global war looms large. In the end, the plan is abandoned—but its existence reveals how fragile peace truly was in 1945.
From the Molotov–Ribbentrop Pact to the Katyn massacre and the struggle over Poland, this is the story of how World War II nearly gave way to another devastating conflict—and the early tensions that would define the Cold War.
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