Why did Russia join World War II?

The Soviet Union had signed a non-aggression pact with Germany just before World War II began. The Germans didn’t want to fight a two-front war in World War II, and the Soviet Union didn’t want to go to war. This agreement made sense for both sides.

However, in 1941, Germany broke this agreement and invaded the Soviet Union. Thus, the Soviet Union had no choice but to join the war and support the Allies, Great Britain and France, in the war against Germany, Japan, and Italy.

The Soviet Union defended every inch of their land. After some initial success, the Germans got bogged down in the Soviet Union. The cold, Russian winters were a factor that negatively impacted Germany. Germany suffered major losses in the Battle of Stalingrad. Germany was on the retreat after this battle and never went on the offensive again. Germany’s invasion of the Soviet Union was one of Germany’s fatal errors in World War II, leading to their eventual defeat.