Formed in 1903 from the major split in the RSDLP—which also produced the Mensheviks—the
Bolshevik faction followed
Vladimir Lenin, and organised a separate party, the Russian Social Democratic Workers Party, aka Russian Social Democratic Labour Party (Bolsheviks), in 1912. After the
October Revolution of November 1917 it became the
Russian Communist Party (Bolsheviks). Formed from the 1903 split with the Bolsheviks, the
Mensheviks followed
Julius Martov. With the formal severing of ties in 1912, the Mensheviks used the name Russian Social Democratic Party (Mensheviks), or sometimes without the qualifier. At the outbreak of
World War I in 1914, the majority supporting the war ("Defencists") maintained control of the RSDLP(M) under
Fyodor Dan and others, while those opposed to the war left as the Menshevik Internationalists under Martov. == Borba ==