The Bolsheviks, led by Vladimir Lenin, were the most radical faction of the Russian Social Democratic Labour Party. They advocated for a socialist revolution and the overthrow of the monarchy.

Vladimir Lenin was the leader of the Bolsheviks and the first leader of the Soviet Union.

The Soviet of Workers' and Soldiers' Deputies was a provisional government that was established in Petrograd (now St. Petersburg) in February 1917 after the overthrow of the monarchy.

The Treaty of Brest-Litovsk was a peace treaty that Russia signed with Germany in March 1918. The treaty gave Germany control over large parts of Russia's western territory.

The Russian Civil War was a civil war that took place in Russia from 1918 to 1921 between the Bolsheviks and their allies and the anti-Bolshevik forces.

Alexander Kolchak was the leader of the anti-Bolshevik forces during the Russian Civil War. He was the Supreme Ruler of Russia from 1918 to 1920.

The Bolsheviks were a political party that was founded by Vladimir Lenin in 1903. They were the most radical faction of the Russian Social Democratic Labour Party.

Iskra was a newspaper that was founded by Vladimir Lenin in 1900. It was the official newspaper of the Bolsheviks.

The February Revolution was a series of protests and strikes that took place in Petrograd in February 1917. The revolution led to the overthrow of the monarchy and the establishment of the provisional government.

The October Revolution was a coup d'état that took place in Petrograd in October 1917. The revolution led to the overthrow of the provisional government and the establishment of the Bolshevik government.

The Left Opposition was a political party that was founded by Leon Trotsky in 1923. The party opposed the policies of Joseph Stalin and advocated for a more radical socialist revolution.

The Right Opposition was a political party that was founded by Joseph Stalin in 1929. The party opposed the policies of Leon Trotsky and advocated for a more moderate socialist revolution.

The United Opposition was a political party that was founded by Nikolai Bukharin in 1929. The party opposed the policies of both Leon Trotsky and Joseph Stalin.

The Workers' Opposition was a political party that was founded by Alexei Rykov in 1929. The party opposed the policies of both Leon Trotsky and Joseph Stalin.

The Workers' Opposition was a political party that was founded by Mikhail Tomsky in 1929. The party opposed the policies of both Leon Trotsky and Joseph Stalin.