White House Deputy Chief of Staff Stephen Miller has issued a stark warning to the Iranian leadership regarding the ongoing standoff as negotiations have failed to progress, Al Jazeera reports.

Speaking to Fox News, Miller said that the current administration in Tehran faces a critical ultimatum from the US.

“This new team in Iran has a choice to make,” Miller said.

“They can either agree to a piece of paper that is satisfactory to the United States, or they can face a punishment from our military, the likes of which has not been seen in modern history. That’s the choice that they face,” he said.