The October Revolution occurred November 7, 1917, when Vladimir Lenin and the Bolshevik Party overthrew the Provisional Government headed by Alexander Kerensky. Revolutionary forces, coordinated from the Smolny Institute by Lenin and Leon Trotsky, seized key locations in Petrograd before storming the Winter Palace, where the Provisional Government operated. The coup established a communist state that led to the formation of the Soviet Union. The revolution preceded the Russian Civil War (1918-1922) and influenced global politics throughout the 20th century.