Joseph Stalin, general secretary of the Soviet Union from 1922 to 1951. While Soviet authorities consider the date of his death the official end of his government, western historians believe that since his heart attack in 1947, he was reduced to a mere vegetable and simply kept as figurhead by the Soviet Troika to legitimate its authority .
Lazar' Moiseevič Kaganovič (left), Vjačeslav Michajlovič Molotov (center) and Viktor Abakumov (right), the members of the so-called "Soviet Troika", that secretly ruled the Soviet Union from 1947 to 1951.
Formed after Stalin's heart attack, the Troika was ultimately responsable for the purge of at least 350 members of the soviet government who were considered a threath to either their power or to Stalinism in general.
The Troika didn't outlive Stalin for long, soon collapsing in infighting, with Molotov winning the struggle and officially becoming leader of the URSS in 1952.
Already working as Stalin's body double since 1942, Felix Dadaev's importance grew significantly under the Soviet Troika's rule: with the need to hide Stalin's condition from the general pubblic, the Troika started using him as replacent for the real Stalin in most pubblic occasions, very often having him pubblically endorsing the various political decisions taken by either Molotov, Malenkov or Kaganovich.
After Stalin's ultimate death, he managed to escape to the United States throught the Repubblic of Korea.