At this point, we should just go back to cold war footing as if Russia, China, and North Korea reformed into a new Soviet Union. They're realigning themselves and we should get prepared for any eventualities.

After all, the Axis powers didn't face a prepared allied force, but we now have NATO and the US' island chain containment of China and North Korea. The former Soviet pact will have a greater uphill struggle to defeat the western world order than the Axis did.

But we're always going to have trade with China up until the very last moment, and China likewise seems to not be keen on jeopardizing on trade, so there is hope yet that China doesn't stick their neck out for Russia.

Oh and besides, Nazi Germany enjoyed far better parity on military technology than Russia ever will now.