Don’t forget the huge British lend lease to the USSR as well. We supplied thousands upon thousands of tanks, vehicles, weapons and material, as well as even having an RAF squadron fighting for the Soviets on the Eastern Front!. Canada also supplied the USSR.
The Soviets could not have mobilised in 1941/2 without the American-British lend lease.
Great points.
And after Germany surrendered, the British were planning on doing what they could in the invasion of Japan.
The Soviets were opportunists when it came to Japan.