With China siding with Germany, would Japan and the US even end up as enemies? With a German-allied China would it be possible for Russia and Japan to be allies (Japan wants an empire, and Russia doesn't want Fascist powers at both ends of the country). Or course, with a much bigger enemy on its Eastern side, Russia might well keep troops in the east that OTL were deployed against Hitler, thus either allowing the Germans to push on Moscow.
Why wouldn't the Japan and the US end up as enemies? I was under the impression that the US and Japan hated each other for reasons completely unrelated to Europe.
In some round about way we might even see the US supporting the Germans. We certainly liked the Chinese more than the Japanese before 1945. Look at all the support we gave them. Even if the Chinese turn fascist and aligned with the Germans, I doubt we're going to ally with the Japanese any time soon.
I mean, sure, FDR REALLY wanted to get into the war in Europe, but if he's not given a good excuse he won't be able to.
So we might see something like this:
Germany, Italy, China and assorted allies VS Britain, France, Russia and assorted allies.
Germany, Italy, China and assorted allies VS Japan
USA VS Japan
An interesting scenario, if you ask me.