Did Stalin Supported the Creation of Israel? I'm confused!

I was reading Losurdo's "Stalin: History and Critique of a Black Legend" and in it the author states that

The USSR strongly supported Zionism and the creation of Israel. Stalin played a prominent and perhaps even decisive role. Without him, “the Jewish State would not have seen the light of day in Palestine,”

The author does elaborate the context and also to show that the accusations levied against Stalin for being "anti-semitic" is unfounded. (Reading such a conflation from today is, needless to say, dangerous)

Another thing the author notes is that the Soviet Union supplied weapons to the Zionists through Yugoslavia in 1945 and then later in '48 through Czechoslovakia.

The fact remains that the military aid in 1945 given to the Zionist movement through Yugoslavia was not an isolated gesture. Three years later, this time with the cooperation of Czechoslovakia, the Soviet Union supplied Israel with arms and, even in violation of the UN Security Council resolution of March 29, 1948, organized the migration of young Jews from Eastern Europe, who went on to strengthen the army of the Jewish state in its war with the surrounding Arab countries. What has been defined as the “Prague-Jerusalem axis” came into operation thanks also to Moscow.

How are we supposed to go about reading such arguments? How can we reconcile the fact that USSR contributed to the 1948 Nakba and the total dispossession of the Palestinians

If, for the sake of absurdity, “anti-Semitism” were to be attributed to Stalin, it would be anti-Arab “anti-Semitism.

PS: The fact remains that The USSR later became one of the most ardent supporter of the Palestinian cause.