The second RSDLP Congress was held in London in July 1903. At the conference, a schism emerged between Lenin's supporters and those of Julius Martov. Martov argued that party members should be able to express themselves independently of the party leadership; Lenin disagreed, emphasising the need for a strong leadership with complete control over the party. Lenin's supporters were in the majority, and he termed them the "majoritarians" ("bol'sheviki" in Russian; Bolsheviks); in response, Martov termed his followers the "minoritarians" ("men'sheviki" in Russian; Mensheviks). Arguments between Bolsheviks and Mensheviks continued after the conference; the Bolsheviks accused their rivals of being opportunists and reformists who lacked discipline, while the Mensheviks accused Lenin of being a despot and autocrat. Enraged at the Mensheviks, Lenin resigned from the "Iskra" editorial board and in May 1904 published the anti-Menshevik tract "One Step Forward, Two Steps Back". The stress made Lenin ill, and to recuperate he went on a hiking holiday in rural Switzerland. The Bolshevik faction grew in strength; by the spring, the whole RSDLP Central Committee was Bolshevik, and in December they founded the newspaper "Vpered" ("Forward").