Nice work, but some things I noticed:
I'd think that the pre-WWIII USSR's borders would be very similar to OTL's USSR; it's hard to imagine the USSR being able to invade the US without at least Ukraine, Belarus, and Central Asia under its direct control. Perhaps the Allies thought it would be too difficult to break up the USSR after Stalin's defeat and were content to leave it under new leadership, somewhat like Germany after WWI. Germany's borders might be closer to the pre-WWII borders as well, no reason to why they'd be like in OTL.
I know that MO had a mission where North and South Korea are separate and hostile to each other, but that mission might make more sense if it was the (unified)Korean/Red Chinese border.