Ceasefire at the point of collapse after almost a week of tit-for-tat exchanges escalate tensions across Gulf region

• Middle East crisis – live updates

Donald Trump has rejected Iranian claims to have closed off the strait of Hormuz as both sides battled for control over the waterway, leaving a ceasefire agreed last month at the point of collapse.

US forces said they had attacked 140 targets in Iran on Saturday night and Sunday morning after Tehran struck and disabled a container ship in the strait, whose transit it said had not been approved. In a statement, US Central Command (Centcom) said its targets had included missile and drone sites, naval facilities, ammunition depots, communication networks and surveillance locations.