Boris Romanovich Rotenberg Boris Romanovich Rotenberg Boris Romanovich Rotenberg (, born in Leningrad on 3 January 1957) is a Russian business man and oligarch. He is co-owner (with his brother Arkady Rotenberg) of the SGM (StroyGazMontazh) group, the largest construction company for gas pipelines and electrical power supply lines in Russia. He was listed by Forbes as Russia's 69th wealthiest person in 2016 with a net worth of $1.07 billion. He is considered a close confidant of president Vladimir Putin. Rotenberg was very involved in martial arts between 1968 and 1978, particularly judo. He trained alongside Vladimir Putin and won several awards for
Arkady Babchenko top Russian officials. Herman mentioned Vyacheslav Pivovarnik as a direct contractor of the assassination. Pivovarnik is the Ukrainian citizen, who according to some sources cooperated with the former deputy of the State Duma Sergey Shishkarev. His location was not established immediately; there is the evidence that in February he left in an unknown direction. Babchenko is married. He has six adopted children and a biological daughter. Arkady Babchenko Arkady Arkadyevich Babchenko (; born 18 March 1977) is a Russian print and television journalist. From 1995, Babchenko served in the communication corps in the North Caucasus while participating in the First