Houthi rebels have killed and captured several crew members after they attacked and sank a second cargo ship in the Red Sea. The Eternity C was struck by drone boats and cruise and ballistic missiles over three days before going down on Wednesday, the Houthis said. This is the second ship the Houthis have sunk in a week, ramping up their campaign to block maritime traffic to and from Israel. Maritime security expert, Martin Kelly, analyses the Houthi strategy for seizing and sinking ships in