Trump warning that Iran ‘won’t have a country’ if it closes strait of Hormuz contrasts with vice-president’s tone seeking to turn over ‘new leaf’ with Tehran – key US politics stories from Sunday 21 June

US-Iran meeting in Switzerland cancelled because of Lebanon fighting; Trump unveils new Air Force One – key US politics stories from Friday 19 June at a glance

The announcements indicated a rough start to the technical-level talks that key mediator Pakistan said will begin Sunday, with Qatari mediators also participating.

Lebanon tensions derail progress as Tehran hardens stance in ceasefire negotiations