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
Lev Leshchenko Lev Leshchenko Lev Valerjanovich Leshchenko (; born 1 February 1942), is a Russian singer, who was best known for his rendition of "Den Pobedy" and the 1980 Summer Olympics closing ceremony theme song "Do svidanja, Moskva". Lev Leshchenko was born on 1 February 1942 in Moscow, Soviet Union. His father, Valerjan Andreevich (1904–2004), was a Red Army officer who was at war outside of Moscow. He was accorded with medals for participation in the Second World War. His mother, Claudia Petrovna Leshchenko (1915 to 1943), died shortly after Leshchenko was born. His grandparents, along with his stepmother Irina Pavlovna Leshchenko,