FILE - In this Tuesday, Jan. 4, 2011 file photo, then Russian President Dmitry Medvedev, left, accompanied by Interros Investment Company President Vladimir Potanin visits the Roza Khutorski resort that is under construction for the 2014 Sochi Winter Olympics, near the Black Sea resort of Sochi, southern Russia. Metals tycoon Vladimir Potanin, whose fortune is…


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