US President Donald Trump said military strikes against Iran could resume “if they misbehave” even as he said that he was reviewing a fresh proposal from Tehran to end the now paused war.

Trump, on his way to Miami from Palm Beach, said he was reviewing a fresh proposal from Iran to end the war, but was sceptical about reaching a deal, contending that Tehran had not yet paid a big enough price for what they have done to humanity and the world over the past 47 years.

“If they misbehave, if they do something bad, but right now, we will see.

It's a possibility that could happen, certainly,” Trump said at the Palm Beach airport after a round of golf and an appointment with his local dentist.

The US President said he was looking at the new proposal sent by Iran on the plane and would talk to the media in Miami.

"I'm looking at it (on the plane).

I'll let you know about it later...

They told me about the concept of the deal.

They're going to give me the exact wording now," Trump said.

Later, an aide to the president said there would be no press conference in Miami.

Trump posted on social media about the new proposal, saying he "can't imagine that it would be acceptable in....