Hello guys, this is my first post here. I wanted to post here because I'm trying to create a timeline for an alternate post-WWI scenario that involves a more successful world revolution. What I'm interested in is how to make it sure that the communists are more successful than in OTL, which involves the survival of the Hungarian Soviet Republic as well. Now, I know that the Hungarians were pretty much hopeless to survive against the whole Entente alone, and that a strong factor in their downfall was internal treachery. I assume these are the two problems that need to be solved - there should be a way to make sure Soviet Russia can intervene and send aid to Hungary, and the Hungarian communists should find a way to root out the treacherous social democrats who were responsible for undermining the Soviet Republic many times.
Basically, the condition needs to be fulfilled with the latest possible POD, with as few changes to the events of WWI as possible. Even better if the Bavarian Soviet Republic can also be saved (though this needs more divergence still, considering they fell earlier than Hungary) and if Soviet Russia stays strong enough to defeat Poland in a coming Polish-Soviet war. Thanks in advance for any ideas!