Iranian supreme leader warns of ‘unforgettable lessons’ if US keeps up attacks

The Iranian leader has vowed consequences to the US attacks (AP)

Iran’s supreme leader has warned of “unforgettable lessons” to follow if the United States keeps attacking the Islamic Republic, and called US president Donald Trump’s signature “worthless and invalid”.

The comments came hours after a negotiator said Tehran was suspending its commitments to the interim deal signed about a month ago.