Purim
There is a tale in the Hasidic Chabad movement that supposedly Joseph Stalin died as a result of some metaphysical intervention of the seventh Chabad leader, Rabbi Menachem Mendel Schneerson, during the recitation of a discourse at a public Purim Farbrengen. Stalin was suddenly paralyzed on 1 March 1953, which corresponds to Purim 1953, and died 4 days later. Due to Stalin's death, nationwide pogroms against Jews throughout the Soviet Union were averted, as Stalin's infamous doctors' plot was halted.
Józef Światło
After the 1953 death of Joseph Stalin and arrest of Lavrentiy Beria, Światło traveled to East Germany on official business. While on the Berlin subway with Fejgin, passing through West Berlin, on 5 December 1953, he "slipped away" and defected to the West.