THE United States launched a fresh wave of strikes on Iran on Tuesday after President Donald Trump vowed to reimpose a naval blockade, prompting Tehran to respond with strikes on targets in countries around the region.

Trump said a negotiated deal was still possible, but fighting surged to a scale unseen since an April ceasefire. Iran hit two ships in the Strait of Hormuz, killing a crew member, according to the United Arab Emirates.

A Norwegian tanker was also hit by an explosion caused by an unidentified device off the Omani coast early Tuesday, the crisis response company MTI Network said.

The US military said it had hit targets across Iran including in the port cities of Bushehr and Bandar Abbas to “degrade Iran’s ability to attack commercial shipping”. — AFP