I would like to see a comparison of what the Soviets expected to gain in terms of occupied countries if Hitler had left them in the Axis as opposed to what they actually were conceded by the Allies after the war.
Joe Stalin changed sides due to Hitler turning on him. But did Stalin get more of Eastern Europe than Hitler planned to give him?
As far as lend lease went, the Soviets sent a lot of that military aid back to North Korea during the Korean War. They were far more of an adversary in the Korean War than the Chinese. As soon as Stalin died and the Soviet leaders were forced to back off with their support, the North Koreans sued for peace. Of course you would never pick up on that by watching the M.A.S.H. propaganda.
Hitler attacked the Soviet Union, because he was afraid the Soviets would get the Romanian oil fields.
Ike threatened to use nukes to end the stalemate via Indian diplomats. Staling dying also helped end the war.
Had Hitler listened to his high command Germany could have possible won the war but he was a total idiot on the strategic level. Britain saved the world by holding the line in the Battle of Britain giving time for the US and Soviets to become involved. I have always contended that the three most important battles of the war were 1) Battle of Britain it saved Western civilization, 2)The Battle of Stalingrad, it broke the Wehrmacht and 3) The Battle of Midway which turned back the Japanese, staggered their offensive operations and the East challenging Western supremacy.