US President Donald Trump says Iran has not notified Washington that it is suspending negotiations, but indicated he was prepared to wait if communications had stopped.

“They haven’t informed us of that,” Trump told NBC. “It doesn’t mean we’re going to go and start dropping bombs all over there…We’ll keep the blockade.”

Earlier, Iran’s semi-official Tasnim news agency reported that Tehran had halted message exchanges with the US because of Israel’s continued attacks on Lebanon.

The report also said Iran and its allies were considering measures to completely block the Strait of Hormuz and activate “other fronts”.

There has been no official confirmation from Iranian authorities.