DOJ hints that a Russian court ruling invalidating an arbitration agreement may not prevent enforcement of a nearly $5 billion award

The US Department of Justice (DOJ) urged the DC Circuit (the US Court of Appeals for the District of Columbia Circuit) on 20 July 2026 to closely evaluate a Russian court's determination that an underlying arbitration agreement is invalid, as that court weighs whether to enforce a nearly $5 billion international arbitration award, according to Law360. The case turns on a contested question in international arbitration enforcement: whether a domestic court in the jurisdiction where the arbitration was seated, in this case Russia, can retrospectively invalidate the arbitration agreement and thereby provide grounds for resisting recognition and enforcement of the award in another jurisdiction, here the United States. The DOJ's position, as reported, is that the Russian court ruling may not be a sufficient basis for the DC Circuit to refuse enforcement. The underlying dispute and the identity of the parties have not been extracted from the available source text beyond the award value and the enforcement posture. The case sits at the intersection of international arbitration enforcement, sovereign immunity considerations, and the geopolitical context of US-Russia relations, which affects the willingness of US courts to give effect to Russian judicial rulings. The story is a live enforcement proceeding in a US federal appellate court. A supplemental DOJ filing referenced in related coverage was due imminently at the time of reporting.