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
David Bronstein David Bronstein David Ionovich Bronstein (; February 19, 1924 – December 5, 2006) was a Soviet chess grandmaster, who narrowly missed becoming World Chess Champion in 1951. Bronstein was one of the world's strongest players from the mid-1940s into the mid-1970s, and was described by his peers as a creative genius and master of tactics. He was also a renowned chess writer, and his book "Zurich International Chess Tournament 1953" is widely considered one of the greatest chess books ever written. David Bronstein was born in Bila Tserkva, Ukraine, to Jewish parents. Growing up in a poor family, he learned