Born Lev Davidovich Bronstein in the Ukraine.
Became a professional revolutionary after leading a half-Marxist, half-Populist student revolutionary group.
Arrested and sent to Siberia for revolutionary activities; joined the Russian Social Democratic Party, the South Russian Workers’ Union.
Married Alexandra Sokolovskaya.
Escaped Siberia to London; first met Vladimir Lenin.
Sided with the Menshevik faction when the Russian Social Democratic Party split.
Returned to Russia and during the revolution against the Tsarist regime he was chairman of the first Soviet (St Petersburg Soviet of Workers’ Deputies) and was arrested and exiled to Siberia.
Escaped Siberia and toured central Europe developing his revolutionary theories; wrote Results and Prospects.
Openly advocated for a proletarian dictatorship.
Outbreak of World War I; Trotsky called for revolution.
March Revolution and the formation of the Provisional Government; Trotsky returned to Russia in May and became a Bolshevik in July; elected to CC and later elected chairman of Petrograd Soviet; planned the November Revolution as part of the Military Revolutionary Committee; was appointed Commissar for Foreign Affairs after the formation of Sovnarkom.
Negotiated peace terms with Germany at Brest-Litovsk following Russian withdrawal from the war.
During the Russian Civil War, he was Commissar for War and