Former Russian Defense Minister Sergei Ivanov has died. His death was reported by the VTB United League, of which he was the honorary president. The causes of death of the official are not disclosed. He was 73 years old. "For the VTB United League, Sergei Borisovich will forever remain a person whose name is inextricably linked with the history of the tournament, its values and achievements. Light memory!", the publication says. Ivanov headed the Ministry of Defense of Russia from 2001 to 2007. After leaving his post, he was appointed Deputy Prime Minister of the Russian Federation. In 2011, he headed the administration of the President of the Russian Federation, and in 2016 became Putin's special representative for environmental protection, ecology and transport. He was relieved of his post in February this year at his own request. In addition, he lost his status as a permanent member of the Security Council of the Russian Federation.