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.
Active measures
Some of the active measures were undertaken by the Soviet secret services against their own governments or Communist rulers. Russian historians Anton Antonov-Ovseenko and Edvard Radzinsky suggested that Joseph Stalin was killed by associates of NKVD chief Lavrentiy Beria, based on the interviews of a former Stalin body guard and circumstantial evidence.
According to Yevgeniya Albats allegations, Chief of the KGB Vladimir Semichastny was among the plotters against Nikita Khrushchev in 1964. KGB chairman Yuri Andropov reportedly struggled for power with Leonid Brezhnev. The Soviet coup attempt of 1991 against Mikhail Gorbachev was organized by KGB chairman Vladimir Kryuchkov. Gen. Viktor Barannikov, then the former State Security head, became one of the leaders of the uprising against Boris Yeltsin during the Russian constitutional crisis of 1993.