Answer :

Final answer:

Hitler stabbed Stalin in the back during World War II by launching Operation Barbarossa, an invasion of the Soviet Union. The Battle of Stalingrad was a significant turning point in the war where the Soviets pushed back the German forces.

Explanation:

Hitler stabbed Stalin in the back because he saw an opportunity to take advantage of the Soviet Union's disintegrating political situation and believed he could defeat Stalin.

In 1941, Hitler betrayed the German-Soviet Nonaggression Pact and launched Operation Barbarossa, an invasion of the Soviet Union. The Battle of Stalingrad in 1942-1943 was a major turning point, where the Soviets halted the German advance and began pushing them back.

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