Igor Rotenberg Igor Rotenberg Igor Rotenberg, () is a Russian billionaire businessman and the oldest son and heir to Arkady Rotenberg, Russian billionaire businessman and co-owner with brother Boris Rotenberg, of the SGM (Stroygazmontazh) group. The Rotenberg's are closely associated with Vladimir Putin. In October 2018, Igor Rotenberg's wealth is estimated to be $1.1 billion. Igor Rotenberg has been under United States sanctions since 6 April 2018. Igor is the majority shareholder in Gazprom Drilling. Igor Rotenberg was born on 9 September 1974 in Leningrad to Arkady Rotenberg. In 2002, he graduated from the Higher School of Privatization and Entrepreneurship () in
Arkady Dvorkovich in Russian Railways company. Dvorkovich's father, Vladimir, was an international chess arbiter. Dvorkovich is an official of the Russian Chess Federation and was elected president of FIDE in October 2018, succeeding Kirsan Ilyumzhinov. Some of Dvorkovich's professional interests are economic regulation, financial management, and tax planning. According to BusinessWeek (2003) Arkady was included in the list of 50 potential world leaders. Dvorkovich speaks English and German. Arkady Dvorkovich Arkady Vladimirovich Dvorkovich (; born 26 March 1972) is a Russian public servant and economist, who was Deputy Prime Minister in Dmitry Medvedev's Cabinet from 21 May 2012 until 7 May 2018.