Alexey Borisovich Miller ( ; born 31 January 1962 ) is Deputy Chairman of the Board of Directors and Chairman of the Management Committee ( CEO ) of Russian energy company Gazprom , Russia 's largest company and the world 's biggest public energy supplier .
Alexey Borisovich Miller ( ; born 31 January 1962 ) is a Russian business administrator . 
 Miller is the Deputy Chairman of the Board of Directors and the Chairman of the Management Committee ( CEO ) of Russian energy company Gazprom , Russia 's largest company and the world 's biggest public energy supplier .