Painting of Vladimir Lenin

Vladimir Ilyich Lenin (Russian: Владимир Ильич Ленин; born Vladimir Ilyich Ulyanov, Russian: Владимир Ильич Ульянов; 22 April [O.S. 10 April] 1870 – 21 January 1924) was a Russian communist revolutionary, politician and political theorist. He served as the leader of the Russian SFSR from 1917, and then concurrently as Premier of the Soviet Union from 1922, until his death. Politically a Marxist, his theoretical contributions to Marxist thought are known as Leninism, which coupled with Marxian economic theory have collectively come to be known as Marxism–Leninism.