Lets assume that a Jewish state is established in the territory of East Prussia (with the exception of Danzig/Gdańsk) following World War 2 and that around 1-1.5 million Eastern European Jews move there, forcibly or not. In this timeline, the great powers feel this is enough of a compensation to the Jews and do not support the foundation of a Jewish state in Palestine.
How might this country progress politically? Would it become a Soviet puppet state, integrated as an SSR or simply finlandized? Would it end up joining the Warsaw Pact or would it be able to stay neutral?
What about economy? Would it become less successful then OTL Israel? What amount, if any, of foreign aid would it recieve? How would it progress after the fall of communism if it happens on time?
Finally, how would its relationship be with its neighboring countries, particularly when (and if) the Soviet Union collapses? What about the United States?