"The new U.S. president - who has big claims and many ups and downs in his words and actions - has been trying for 15 months to break the JCPOA ... but the structure of the JCPOA is so strong that it has not been shaken by such quakes," Rouhani said in a speech broadcast live on state television.
"Iran will not violate the nuclear deal, but if the United States withdraws from the deal, they will surely regret it. Our response will be stronger than what they imagine and they would see that within a week," Reuters cited him as saying.
Rouhani was speaking as Tehran marked National Nuclear Technology Day and unveiled what it said were its latest nuclear achievements including a nuclear battery and centrifuges for the oil industry.
The president said Iran has been preparing for every possible scenario, including a JCPOA without the United States - which would still include European signatories, China and Russia - or no deal at all.
"We will produce any weapons necessary to defend our country in such a volatile region. But we will n
More about: Rouhani