Mimicking Trump's bellicose Twitter threat directed at Iran's leaders the previous day, Zarif wrote: "UNIMPRESSED ... We've been around for millennia & seen fall of empires, incl our own, which lasted more than the life of some countries. BE CAUTIOUS!

On Monday, just hours after US secretary Mike Pompeo urged Iranian diaspora to "support" oppositions in Iran, President Trump in an angry tweet threatened Iran against "consequences" the "likes of which the country has never suffered before."

In his latest tweet, the President said: "Never, ever threaten the United States again or you will suffer consequences the likes of which few throughout history."

Rouhani had earlier warned Washington to not "play with the lion's tail" and that conflict with Iran would be the "mother of all wars.'  

"The world heard even harsher bluster a few months ago," Zarif said of Trump's tweet.

Meanwhile, Israeli regime Prime Minister Benjamin Netanyahu on Monday praised President Donald Trump's "tough stand" against Iran after the US leader issued a stark warning to the Islamic republic.