US president calls Iranian response ‘totally unacceptable’ while Tehran says it will retaliate against any new US strikes or foreign warships in strait of Hormuz

• Trump calls Iran’s response to peace plan ‘totally unacceptable’ as ceasefire frays

Turkey’s foreign minister, Hakan Fidan, will visit Qatar later today for talks on the war, its impact on the region and efforts to ensure navigational safety in the strait of Hormuz is resumed, a Turkish diplomatic source told the Reuters news agency.

Turkey, which neighbours Iran, has been in close contact with the US, Iran and mediator Pakistan since the start of the conflict. It condemnded the US and Israel for launching the war, widely seen to have been done illegally, but also criticised Iran’s counter strikes on Gulf states.