Basically: Post WW2 Tito and the Communist party gets couped by a clique of military officials, they rebrand the country but retain a lot of the welfare programs and economic planning, still remain neutral between the east and the west. Greek civil war causes a general Balkan crisis, Bulgaria falls into anarchy, Turkey occupies large parts of Thrace and war breaks out between Yugoslavia and Albania. The war ends when the Albanian government is blown in a terrorist bombing and a military interim government steps in, they sit down to negotiate and eventually end up with joining Yugoslavia as an autonomous republic. Bulgaria is occupied jointly by the Soviets and Yugoslavs and Turkey is forced to cede Thrace and parts of its original holdings in Europe after the Soviets threaten invasion. Bulgaria is officially made part of Yugoslavia after a deal is brokered with the Soviets where they are given rights to extract minerals. Greek civil war eventually causes intervention directly by the Yugoslavs after a border checkpoint is victim to military bombings, the two opposing sides crumble and are forced to capitulate. Greek representatives, realizing the vast destruction caused by the civil war draw up plans to join the union in a similar fashion to Albania due to how reliant they would otherwise be on economic aid, and figure it better to unite than become pawns to a potential benefactor. Yugoslavia officially renames itself to the Union of Balkan Federal Republics