(September 29, 2023, 1:46 PM EDT) -- SAN JUAN, Puerto Rico — A federal judge in Puerto Rico granted a marine insurer’s motion to stay litigation and compel arbitration in London of a third-party complaint brought against it by an oil tanker’s guarantor over liability for claims brought by the United States in relation to the vessel running aground in 2006 and causing environmental damage despite the guarantor’s status as a nonsignatory to the arbitration agreement....