It is not worth responding to "cheap remarks" from U.S. President Donald Trump, Iran's president said on Wednesday, after days of sabre-rattling between Washington and Tehran.
"Iranian nation's steadfastness, unity, integrity and disregarding of their t[h]reats and plots and choosing the path of resisting and attempting to foil the enemies' plots are the most powerful response to the cheap remarks of US rulers," Rohani said in an English-language statement.
Iran has already filed a complaint against the U.S. with the International Court of Justice, citing its withdrawal from the Iran nuclear deal and sanctions against Tehran, Rohani said.
Rohani did not directly address Trump's latest comments that he would be willing to forge a new nuclear agreement with Iran on Tuesday.
But the Iranian leader also did not mention his previous threats to start an oil export blockade on the Gulf in response to US efforts to revive sanctions against Iran.
Observers in Iran think Rohani's sober reaction is a way to keep the door open for possible negotiations with the US, as Tehran's economy continues to struggle.
Rohani warned at the weekend that a conflict with Iran would be "the mother of all wars."
Trump fired back at him directly, tweeting at him to "NEVER, EVER THREATEN THE UNITED STATES AGAIN OR YOU WILL SUFFER CONSEQUENCES THE LIKES OF WHICH FEW THROUGHOUT HISTORY HAVE EVER SUFFERED BEFORE."
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