Lev Borisovich Kamenev (Russian: Лев Бори́сович Ка́менев, IPA: [ˈlʲɛf bɐˈrʲisəvʲɪtɕ ˈkamʲɪnʲɪf]; 18 July [O.S. 6 July] 1883 – 25 August 1936), born Rozenfeld (Russian: Ро́зенфельд), was a Bolshevik revolutionary and a prominent Soviet politician. He was one of the seven members of the first Politburo, founded in 1917 to manage the Bolshevik Revolution: Lenin, Zinoviev, Kamenev, Trotsky, Stalin, Sokolnikov and Bubnov.Kamenev was the brother-in-law of Leon Trotsky. He served briefly as the equivalent of the first head of state of the Communist party of Soviet Russia in 1917, and from 1923-24 as acting Premier in the last year of Vladimir Lenin's life. Joseph Stalin viewed him as a source of discontent and a source of opposition to his own leadership; Kamenev fell out of favor and was executed on 25 August 1936, aged 53, after a brief show trial.