PM meets Mohammed bin Salman in Saudi Arabia before further visits to regional allies, who may see him as more reliable than Trump

• Middle East crisis – live updates

The UK has a “job” to help reopen the strait of Hormuz, Keir Starmer has said, as Iranian reports said the key shipping route was closed again just hours after a supposed ceasefire.

The prime minister met British and local military personnel at an airbase in Taif, Saudi Arabia, at the start of what is expected to be a wider trip to Gulf allies, one billed as a mirror to his efforts to pull together a plan for how a ceasefire might operate in Ukraine.