Lev Borisovich Kamenev (Russian: Лев Бори́сович Ка́менев, IPA: [ˈlʲef ˈkamʲɪnʲɪf] ([2] listen); 18 July [[ O.S.] 6 July] 1883 – 25 August 1936), born Rozenfeld (Russian: Ро́зенфельд), was a Bolshevik revolutionary and a prominent Soviet politician. He served briefly as the first head of state of the new republic in 1917, and from 1923-24 the acting Premier in the last year of Vladimir Lenin's life.