Actually, most of the key architects of the Zionist revolutionary movement in Israel were Trotskyists - Trotsky was the one who supplied arms to the Jews of Odessa in their resistance to the Black Hundreds. Stalin was the organizer of the anti-Zionist Yevketsists. When Stalin took full power, the Zionists fled to avoid being turned in by the Yevketsists.
I would grant that many of the early Zionists were foolish socialists, but it's quite a leap to suggest that any were "hard core Stalinists." Stalin probably killed upwards of 20 million people. The Zionists didn't kill anyone except in self-defense.
ML/NJ