Sergei Pugachev, a tycoon once dubbed "Putin's banker" because of his influence in the Kremlin, has filed a claim against Russia for more than $10 billion after his business empire was carved up when he fell out of favour with President Vladimir Putin.
Lawyers for Pugachev on Monday issued notice of a claim against Russia that is likely to be heard in the Permanent Court of Arbitration in The Hague, a source close to Pugachev told Reuters on condition of anonymity.
Pugachev's lawyers will outline his claim against Russia on Tuesday in Paris, the source said.