Houthi rebels in Yemen have launched a violent new wave of attacks on ships in the Red Sea, sinking two vessels and killing crew members.

Rescuers pulled three more crew members and a security guard alive from the Red Sea on Thursday, maritime security sources said, a day after Houthi militants sank the Greek ship Eternity C and said they were holding some of the crew still missing.

Israel has called on Washington to resume its strikes on Houthis after the militant group resumed its attacks on shipping. The request comes more than two months after US President Donald Trump announced a ceasefire deal with the militant group, the culmination of a campaign of air and naval strikes against targets in Yemen.