Sir Keir Starmer joined the French and German leaders on Monday in urging restraint in the Middle East amid fears of a new flare-up of tensions between Iran and Israel.
The US Navy hurried more vessels to the region - including a guided missile submarine and an aircraft carrier strike group led by the USS Abraham Lincoln - as Iran deliberates its response to the killing of a top Hamas leader in Tehran and a senior Hezbollah commander in Beirut.
