A Houthi drone boat packed with explosives detonated in the Red Sea on Thursday but failed to cause any damage or casualties, the U.S. Navy said, as the Yemen-based group continued its attacks in defiance of international calls to stop. The latest attack came one day after 12 countries including the U.S, Britain and Japan issued a joint statement cautioning the Houthis of unspecified "consequences" unless it halts its attacks, in what one U.S. official on Wednesday suggested was a final warning.
