[W]e know very well that Stalin nurtured an almost pathological hatred for Jews—and Judaism.
In the U.S.S.R. anti-semitism is punishable with the utmost severity of the law as a phenomenon deeply hostile to the Soviet system. Under U.S.S.R. law active anti-semites are liable to the death penalty.
"Stalin was surrounded by Jewesses — from Polina Molotova and Maria Svanidze to Poskrebysheva and Yezhova. Beria's son, reliable on gossip, dubious on politics, recalled that his father gleefully listed Stalin's affairs with Jewesses."
Determining Stalin's real attitude to Jews is difficult. Not only did he repeatedly speak out against anti-Semitism but both his son and daughter married Jews, and several of his closest and most devoted lieutenants from the late 1920s through the 1930s were of Jewish origin, for example Lazar Moiseyevich Kaganovich, Maxim Litvinov, and the notorious head of the secret police, Genrikh Yagoda. There were not so many Jews allied with Stalin on the party's right as there were allied with Trotsky on the left, but the importance of men like Kaganovich, Litvinov, and Yagoda makes it hard to believe that Stalin harbored a categorical hatred of all Jews, as a race, in the way that Hitler did.
Pulizter Prize winning contemporaries, and even old Bolshevik comrades
of Stalin, claim that she did exist and she was married to Stalin.