An interesting question.
“Sino-Japanese buildup in western China and Manchuria along USSR’s border be to disallow full USSR deployment against Euro-Axis?” It sound like you are proposing a transition directly from enemies to friends.
Yes, I certainly got ahead of myself there :lol:. I guess I was thinking along the lines of them being separately deployed and that China and Japan would go along with it to acquire territory to make up for the eastern land ceded to Japan. But, yes, extremely unlikely.
Thanks for the input, guys.