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The Vyborg–Petrozavodsk Offensive was a Soviet military operation launched in June 1944 against Finland during World War II. The offensive aimed to cut off and encircle Finnish forces in the Karelian Isthmus and capture the city of Petrozavodsk, the capital of the Karelo-Finnish Soviet Socialist Republic. The offensive was successful, and Finland was forced to sign an armistice with the Soviet Union in September 1944, ending the Continuation War.