Iranian President Hassan Rouhani has defended his country's nuclear deal with Western powers, saying US President Donald Trump cannot undermine it.
- Iran says the outcomes of the nuclear deal are "not reversible"
- Donald Trump is expected to announce he will decertify the agreement
- UN inspectors have verified Iran is complying with the terms of the deal
Under the 2015 deal, Iran agreed to limit its disputed nuclear program in return for the easing of economic sanctions.
However, Mr Trump is expected to announce soon he will decertify the deal, a senior administration official has said, in a step that potentially could cause the accord to unravel.
"In the nuclear negotiations and agreement, we reached issues and benefits that are not reversible," Mr Rouhani said at a ceremony at Tehran University marking the start of the university academic year, according to state media.
"No one can turn that back, not Mr Trump or anyone else."
"Even if 10 other Trumps are created in the world, these are not reversible."
Mr Trump, who has called the pact an "embarrassment" and "the worst deal ever negotiated", has been weighing whether the deal serves US security interests as he faces the October 15 deadline for certifying that Iran is complying with its terms.
The prospect of Washington reneging on the deal has worried some of the US allies that helped negotiate it, especially as the world grapples with North Korea's nuclear and ballistic missile development.
If Mr Trump does not certify that Iran is in compliance, the US Congress will have 60 days to decide whether to reimpose sanctions waived under the deal.
UN inspectors have verified Iranian compliance with the terms.
Mr Rouhani said if the United States violated the deal then it would hurt its own reputation in the international community.
"If America carries out any violations today, the whole world will condemn America. They will not condemn Iran," he said, according to state media.
"Then they will say why did you trust America and sign an agreement with them?"