London Brawl Between Pro-Putin Tycoons Tests Kremlin’s Patience

They’re two of Russia’s most powerful tycoons, each with a reach that extends into Vladimir Putin’s inner sanctum, and now they’re fighting over one of the country’s most lucrative assets.

The dispute between the billionaires—Vladimir Potanin and Oleg Deripaska—runs from Arctic mines to the High Court in London. The legal proceedings provide a glimpse into the rules, written and not, that govern the vast fortunes that exist at the pleasure of the newly re-elected president.