The United States warned on Saturday of a potential environmental disaster in the Red Sea after Houthi rebels struck an oil tanker off the Yemeni coast. The Greek-flagged Sounion was struck on Wednesday off the rebel-held port city of Hodeida, with the Iran-backed Houthis claiming to have hit the vessel with drones and missiles. On Friday, the UKMTO maritime agency said three fires had been spotted on the ship, while a video released by the Houthis on social media allegedly showed three explosions on the ship. The 274-meter long vessel had departed from Iraq and was destined for a port near At…