Explosions reported across Iran after Donald Trump vowed to ‘hit them hard again’, with Bahrain, Kuwait and Jordan targeted by Tehran

• Middle East crisis – live updates

The US launched a new round of airstrikes on Iran into Thursday morning after Donald Trump warned Tehran would “pay the price” for stalled negotiations, prompting Iran to respond with strikes targeting Bahrain, Kuwait and Jordan.

The new US assault across a range of Iranian cities came as efforts to negotiate an end to the war again appeared stuck, with Iran insisting it would maintain its chokehold on the strait of Hormuz. The American attack appeared more intense and wider than the day before, but Iran released no information about what was hit.