Yemen’s Iran-backed Houthi rebels threatened on Saturday to attack any vessels heading to Israeli ports unless food and medicine were allowed into the besieged and war-hit Gaza Strip. The latest warning comes amid heightened tensions in the Red Sea and surrounding waters following a series of maritime attacks by Houthi rebels since the start of the Israel’s brutal military campaign in Gaza on October 7, which has killed over 17,700 Palestinians. In a statement posted on social media, the Houthis said they “will prevent the passage of ships heading to the Zionist entity” if humanitarian aid is …