orig. Yuly Osipovich Tsederbaum
born Nov. 24, 1873, Constantinople, Ottoman Empire
died April 4, 1923, Berlin, Ger.
Russian revolutionary.
He first lived in Vilna, where he belonged to the Bund, a Jewish socialist group. In 1895 he and Iskra . From 1903 Martov supported the {{link=Menshevik">Menshevik faction of the Russian Social-Democratic Workers' Party and became its leader (1905–07). After the Russian Revolution of 1917 , he supported the Bolshevik government in the Russian Civil War but later opposed many of its dictatorial measures. He left Russia in 1920 and edited the Socialist Courier in Berlin.