DUBAI, United Arab Emirates — Rescuers found four more crew members Thursday who went missing after Yemen's Houthi rebels sank a ship in the Red Sea as the United States alleged the group may “have kidnapped” others on board. The Houthis released dramatic footage of the sinking of the Liberian-flagged, Greek-owned Eternity C , which the rebels targeted with gunfire and explosive drones for hours, killing at least three crew members. The attack on the Eternity C, as well as the sinking of the