( July 2, 2026, 12:52 PM EDT) -- WASHINGTON, D.C. — A Russian oil investor in an appellant brief to the District of Columbia Circuit U.S. Court of Appeals argues that a federal judge improperly refused to lift a stay on postjudgment discovery as it seeks to enforce a confirmed arbitral award worth more than $172.9 million against Ukraine, which has been in place since Russia invaded Ukraine and which the United States continues to support due to “national security” concerns....