Iran's Supreme Leader Mojtaba Khamenei has dismissed the signature of the US president as worthless and said American behaviour has once again shown tyranny, domination and brutality.
According to the 24NewsHD TV channel, in a statement, Khamenei referred to the United States as the "Great Satan" and said Iran would teach Washington an unforgettable lesson.
On the other hand, US President Donald Trump said that if Iran was not complying with the deal, then Washington had no need to worry.
According to American media reports, Mr Trump also said that Iran would never be allowed to acquire nuclear weapons.
Trump described the deaths of soldiers in Jordan as tragic and expressed sorrow over the situation.
He also instructed the Pentagon to open the "gates of hell" for Iran, further intensifying the hostile exchange between the two sides.