The foreign minister warned of “drastic measures” under discussion in Iran.
Zarif declined to specify, pointing to “what certain members of our parliament are saying about Iran’s options.”
Despite the threats of a tough response to a US pullout, Zarif also left open the possibility of diplomatic action during a 45-day period to formally notify the withdrawal.
“Whether other things can be done during those 45 days … is a hypothetical question that needs to be addressed at that time,” said Zarif.
A decision by Trump to walk away, he warned, would send a message to all governments “that you should never come to an agreement with the United States, because at the end of the day, the operating principle for the United States is, what’s mine is mine, what’s yours is negotiable.”