The claimed acquisition by Yemen’s Houthi rebels of hypersonic missiles capable of penetrating Israeli air defences threatens to further heighten Middle East tensions, as Saudi Arabia calls for more than “pinprick bombings” to constrain the supply of weapons to the group.

Saudi Arabia, which supports the Yemen government opposing the Houthis, believes Iran has been arming the group, including with the weapons used in the attacks on commercial shipping in the Red Sea. Those attacks have led to a halving of the traffic on the Red Sea route, pushing up the costs of maritime transport and damaging the Egyptian economy through disruption to the Suez canal.