He wrote about this in his Twitter.
"Not impressed. The world heard even more abrupt empty threats. And the Iranians have heard threats, albeit more civilized, for 40 years already, "Zarif said.
He also said that the Iranian people existed for thousands of years and "saw the fall of empires, including their own, which were older than some countries."
"Be careful," Zarif wrote.
COLOR US UNIMPRESSED: The world heard even harsher bluster a few months ago. And Iranians have heard them -albeit more civilized ones-for 40 yrs. We've been around for millennia & seen fall of empires, incl. BE CAUTIOUS!
- Javad Zarif (@JZarif) July 23, 2018Earlier, Trump threatened Iranian President Hassan Ruhani with serious consequences if he threatened the United States.