Soviet Defeat in WW2- repercussions for the monarchy?

For one reason or another, the Soviet Union is defeated before the Second World War ends. Either some sort of internal collapse, or a successful Nazi invasion...

What I wonder is if this happened, how long do you think the status quo of republics/monarchies existing in Eastern Europe would have lasted? New dictatorships?

Do you think any new monarchies would have been introduced after the War in Eastern Europe? Would Europe as a whole be richer and more influential worldwide without a Cold War divide? Would the EU have been established and extended longer ago?
 
Nazi forces invasion of the Soviet Union penetrates further into Russia, and in 1945 revolution (with secret support from Britain, as Churchill fears the post-war divides Communist Russia implies) topples Stalin.

The War is won by the Allies as in OT, just that Russia is still divided and without central leadership by VE Day
 
Top