The US-Iran truce is in danger after the sides exchanged fire in and around the Strait of Hormuz. The US claims to have destroyed six Iranian speedboats, while Iran says it hit an American warship. Donald Trump has also threatened to blow Iran ‘off the face of the earth’ if it interferes with his plan to guide stranded vessels through Hormuz. Meanwhile, a suspected Iranian projectile has sparked a fire at the UAE’s biggest oil port. Leone Lakhani reports from Washington.