His comments on Sunday came just days after US President Donald Trump threatened to withdraw from the deal if its "disastrous flaws" were not fixed.
Russia's foreign minister has condemned Donald Trump's threats to withdraw from the Iran nuclear deal, arguing that the United States' reckless actions are destabilising the Middle East, Ukraine and the Korean peninsula.
Iran says its nuclear program is only for peaceful purposes and that it will stick to the accord as long as the other signatories respect it but will "shred" the deal if Washington pulls out.
But the real aim of United States opponents of the nuclear deal signed by President Obama and others in 2015 is to make sure that Iran gets no "peace dividend" out of the agreement and is provoked into walking away from it.More news: Nintendo Direct: New Games Available For Nintendo Switch and 3DS
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Trump is required to renew the existing deal every 120 days under U.S. law.
Despite keeping the deal intact, Trump stirred ire in Tehran on Friday by announcing fresh separate sanctions on 14 Iranian individuals and entities at the same time.
Yet keeping the U.S. in the JCPOA goes against one of Trump's major campaign promises and contradicts his repeated characterization of it as one of the worst deals in history. It looked much more as if Iran and the powerful European states, aside from Russian Federation, which is already in the Iranian corner, were presenting a common front against the U.S. in defence of the nuclear deal. He also wants Congress to modify USA law to link missile tests and nuclear weapons programs, as well as impose trigger points that would automatically snap sanctions back into place.
The EU said in a statement it had taken note of Mr Trump's decision and would assess its implications. All these ill-considered actions and inactions by Trump and his coterie pale in significance compared to the prospect of stoking a military confrontation with Iran. He told him the deal had not been "derailed", but now must confront "some new complicating factors", the state news agency Xinhua reported Saturday.
They are also the first concrete global response to the Iranian government's treatment of protesters. Iranian-born commentator Meir Javadanan told WIN, "Trumps' threats can not work". Terms have already been agreed to, so he can not unilaterally change them.