Sanctions compliance in shipping has never run on a single rulebook. The U.S., UK, and EU maintain separate designations, separate prohibitions, and separate licensing mechanisms, even when their policy objectives align. Operators have managed that by working to the strictest applicable restriction and treating the regimes as broadly convergent. October has made the differences commercially sharp, and it has produced numbers that measure them. On 19 October, U.S. Energy Secre
