Lev Kamenev arrested in 1902, ending his formal education. From that point on, he worked as a professional revolutionary, and was active in the capital St. Petersburg, Moscow and Tiflis. He adopted the surname Kamenev during this period. In the early 1900s, he married Olga Bronstein, a fellow Marxist (and younger sister of Leon Trotsky, who had also adopted a different surname). The couple had two sons together. Kamenev joined the Communists in 1901. He took a brief trip abroad in 1902, meeting Russian social democratic leaders living in exile, including Vladimir Lenin, whose adherent and close associate he became. He also
Olga Kameneva religious and the languages spoken at home were Russian and Ukrainian, not Yiddish. Olga Bronstein joined the Russian Social Democratic Labor Party in 1902 and soon married Lev Kamenev, a fellow Marxist revolutionary. In 1908, after Lev Kamenev's release from prison, the Kamenevs left Russia for Geneva and then Paris, where Lev Kamenev became one of Vladimir Lenin's two deputies. The couple helped Lenin edit the main Bolshevik magazine "Proletariy". In January 1914, the Kamenevs moved to St. Petersburg so that Lev could be in immediate control of the Bolsheviks' legal newspaper "Pravda" and their Duma faction. In early 1918,