KAREN LECRAFT HENDERSON, Circuit Judge: This appeal arises from a long-running dispute between the Republic of Moldova and a Ukrainian energy provider called Energoalliance. For the better part of 1999 and 2000, Energoalliance sold electricity to a Moldovan state-owned utility. After the utility failed to pay its bill in full, Energoalliance alleged that Moldova violated its obligations under the Energy Charter Treaty. An arbitration panel agreed and a company called Stileks—which company, through a series of corporate transactions, owns the right to Energoalliance’s arbitration award—now attempts to recover. Stileks and Moldova are proceeding against each other in multiple forums. In this court, the main issue is whether the district court correctly confirmed the arbitration award which, with interest, now exceeds $58 million. We uphold confirmation of the award but remand for the district court to consider whether Moldova had a settled expectation that an adverse judgment would be denominated in Moldovan lei rather than U.S. dollars.