The spokesman of the Atomic Energy Organization of Iran said Tehran is capable of fully restoring its nuclear capabilities curtailed by the 2015 deal, in case the US is found to be in violation of the international pact.
"If we decide to revert to the past, our hands are not tied and we have already made the necessary preparations. But we hope they (the Americans) remain committed to the agreement, which would be in everyone's interest," Behrouz Kamalvandi was also quoted as saying by ISNA on Sunday.
Iran agreed under the deal, negotiated with the six major powers, to swap temporary restrictions on its nuclear work for the removal of international sanctions.
The high-profile agreement, however, has come under the typically overblown attacks of US President Donald Trump as "the worst deal ever" and "an embarrassment".
He has reprimanded his predecessor, Barack Obama, for being too soft on Iran during the nuclear negotiations and not pushing hard enough to compel it to accept restrictions beyond the nuclear issue.
In a controversial announcement last month that drew the sharp objection of the other signatories, the hawkish Republican decertified Iran's compliance with the pact and demanded the deal's "flaws" be fixed if the US is to remain in the pact.
Trump's decertification announcement came despite the UN nuclear agency's reports verifying Iran's full commitment.
"Our commitments have been verified by the agency eight times so far and no one can claim that Iran has failed to carry out its obligations," Kamalvandi said.
The landmark nuclear accord required the Islamic Republic to reduce the number of centrifuges installed at Fordo and Natanz enrichment sites, cut the enriched uranium stockpile below 300 kg and the fissile purity of 3.67%, and redesign and rebuild the Arak heavy water reactor.
"If it comes to reverting, definitely we will be in a better position than the pre-deal era in terms of the amount and purity of the uranium we can enrich, the production of heavy water and operation of the [Arak] reactor," Kamalvandi declared.
