[Abcdxxxx]

Well it's no secret that Stalin didn't like Jews. It's true, he did support the Zionest (with contradictory periods where he outlawed it as well) so he must have given Czechoslovakia a green light, since they were just a puppet regime. Apparently he doubted Zionism would work, but saw the potential of an anti-collonialist yet capatilist ally who weaken British Imperialism. Russia commited fully to supporting Zionism around 1939, only to do an about face, and condemn it by 1948, causing a whole new wave of reactionary antisemetism in Russia that forced even more Jews to look towards the Zionist Party for help. By this point the Communist Parties within the Arab League had all but lost hope, and Muslims grew hostile towards the movement. I've never heard that Stalin was supporting Zionism as part of a wider strategy, but it's possible... it's not like his motives were ever to better Jewish people.