Proposal at heart of offer made during a 30-country two-day meeting jointly organised by France

• Middle East crisis – live updates

Britain is prepared to deploy a squadron of RAF Typhoons based in Qatar to patrol over the strait of Hormuz as part of a multinational mission to keep open the strategic waterway once the Iran war comes to an end.

The UK military also offered to deploy mine-hunting drones and specialist divers to help clear the strait mined by Iran – but no decision has been made on whether HMS Dragon or another warship would also be deployed.