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Number 8: German Khan

Net Worth: $11.1 billion
Co-founder of Alfa Group

German Khan is the co-owner of one of Russia's largest privately owned investment groups, the Alfa Group Consortium, which he founded with Mikhail Fridman (who's higher up the list) and Alexei Kuzmichev. The three started commodities trading-outfit Alfa-Eco in 1989, before launching Alfa Bank, now Russia's largest private bank, two years later. The Alfa Group has since built up interests in commercial and investment banking, asset management, insurance, retail, telecommunications and water utilities.

The Alfa Group bought Tyumen Oil from the state in the late 1990s and merged it with BP's Russian assets, forming TNK-BP. The group later sold their share in the joint venture to Russian state oil firm Rosneft for $28 billion dollars.

Forbes notes that Khan is a Kiev native, who studied in Moscow. According to Wikileaks documents published by the Telegraph newspaper, the chief operating officer of TNK-BP, Tim Summers, reported that during a hunting trip at Khan's hunting lodge, Khan told him that 'The Godfather' film was his favorite movie and that he considered it his "manual for life."

Andrey Rudakov | Bloomberg via Getty Images