Yemen's Houthi rebels on Friday released a video showing fires and explosions on a vessel in the Red Sea. It's thought that the vessel is the Sounion, a Greek-flagged oil tanker which had been attacked by the rebels earlier this week. It wasn't immediately clear what had happened to the tanker, which was abandoned by its crew on Thursday and reportedly anchored in place. Authorities now say the vessel appears to be adrift in the Red Sea.