Covington & Burling has secured a $6.31 million contract to represent Ukraine’s state-run oil company Naftogaz in an arbitration dispute against the Russian government over its 2014 incursion into Crimea.

Led by partners David Pinsky in New York, Marney Cheek in Washington, D.C., and Jeremy Wilson in London, Covington represents Naftogaz as it pursues claims that Russia took steps to wrest away the Ukrainian oil and gas company’s assets in Crimea. Naftogaz announced the arbitration in October under a bilateral investment treaty between Ukraine and Russia, saying Russia’s actions in Crimea caused at least $2.6 billion in damages to Naftogaz and six subsidiaries.