when did the soviet union declared war on japan
Soviet–Japanese War The Japanese were caught completely by surprise when the Soviets declared war an hour before midnight on 8 August 1945, and invaded simultaneously on three fronts just after midnight on 9 August.
Korea under Japanese rule Following the dropping of atomic bombs on Hiroshima and Nagasaki, and the impending overrun of the Korean peninsula by Russian forces, Japan surrendered to the Allied forces on 15 August 1945, ending 35 years of Japanese occupation.