Slovakia and Transylvania both lost some land to Hungary, and became puppet states in Budapest's orbit. Romania proper had a socialist government installed, and lost Bessarabia to the USSR, the government is deeply unpopular, and mostly on the USSR's leash. Czechia is firmly under German control both politically and economically, despite its official independence. Unsurprisingly, having been more or less dependent on its allies to save it, Kun's position isn't terribly secure, but his government at least 'won'. Hungary's borders include a sliver of southern Slovakia plus carpathian ruthenia, and a portion of Transylvania's west as well, but given they want to keep it from being even more Romanian than it already is, and also to keep Romania weak by keeping it separate, Hungary hasn't just carved out its center to gain the Hungarian majority lands there.What are the borders of this Red Hungary? Most of pre-war Hungary (with Slovak, Ruthenian, Banat and Transylvanian A.S.S.R.-s) excluding the OTL losses to Yugoslavia and Italy? Or is it smaller? What is the fate of Czechia and Romania here?
Yugoslavia more or less got off scot-free. By then, Hungary was exhausted, and pretty much would've needed its allies to do all the fighting for them. Yugoslavia still has Banat, and Hungary fully means to retake it if and when war comes.