If Japan hadn't fought with the Russians earlier in the war. And decided to to invade only Manchuria up to the border with Russia and signed in with the German/Soviet pack. 1)Would USA still place an embargo on Japan? If not,then? Secretly Japan agrees with Germany to invade Russia in 41. With more or less of a holding action, keeping the Siberian troops occupied. 2)What then of the winter in Moscow? With no Siberian troops sent in as reinforcements. If Stalin decides to relocate and continue the fight after the fall of Moscow. 3)What then of Stalingrad? The Japanese decide to put forth all of their forces into pushing back the siberians due to an agreement with Hilter that if they do then he will share with Japan the oil from the caucasus'