Yemen’s Houthis said they will impose an immediate naval blockade on Saudi Arabia, escalating tensions across the Red Sea and adjacent waterways. In televised remarks, the group portrayed the decision as retaliation, tying it to Saudi actions and framing it as a “blockade for a blockade.” The announcement raises concerns about disruptions to commercial shipping, regional maritime security, and humanitarian access. Saudi authorities were not described as responding in the initial statement, and it remains unclear when enforcement would begin or how widely it would affect traffic.