From FT: When Oleg Deripaska’s UC Rusal announced last year that it was buying a 25 per cent stake in Norilsk Nickel, investors were delighted. It seemed to be the first step towards joining two of Russia’s biggest metals companies to forge a rival to BHP Billiton.

But Mr Deripaska has collided with Norilsk’s biggest shareholder, Vladimir Potanin, the Russian billionaire, for control of the world’s biggest nickel miner….. Full Article: Source