Treasury Secretary Steve Mnuchin has said he expects President Trump to impose sanctions on Iran.
The 2015 deal between Iran and the world powers is meant to curb Tehran's nuclear activities in exchange for lifting some economic sanctions.
President Trump had issued threats in October to take out the Iran nuclear deal unless its defects are right, either through talks with other signatories of the deal or unilaterally by the US Congress. JCPOA is not renegotiable: "rather than repeating exhausted rhetoric, U.S. must bring itself into full compliance -just like Iran", Zarif said on his social Twitter account.
Trump had faced a Friday deadline to decide on whether to waive the sanctions.
"One of the things that should be noted, and it's often overlooked, is that the sanctions that were imposed on Iran's ballistic missile programs are still in place", he says.
Critics of the deal in Congress have also proposed amending legislation to ensure that USA sanctions would "snap back" automatically if Iran carried out certain actions.
The EU and United Kingdom also acknowledged Trump's announcement, but said they would not decide on a course of action until discussing it further with the deal's European signatories.
Mr. Trump now will work with European partners on a follow-on agreement that enshrines certain triggers that the Iranian regime can not exceed related to ballistic missiles, said senior administration officials who briefed reporters on the decision.
"Any attempts by the US side to unseal the JCPOA without consent from all the other parties would directly violate the fundamental principles of worldwide law, and as the matter also concerns the nonproliferation regime, it would also serve as a powerful incentive toward its further erosion", Kosachyov said. I said I would not certify the nuclear deal-and I did not.
Instead of repeating the same "stale" statements, the USA should commit fully to the deal, just like Iran, added Zarif.
Alaeddin Boroujerdi, chairman for the Committee for Foreign Policy and National Security at the Iranian parliament, declared that Tehran will not abandon a fraction of its ballistic missile policies.
White House is working with Congress on a US legislation, which seeks provisions to permanently prevent Iran from acquiring nuclear weapons and subject Iran's long-range missile program to severe sanctions.
Two senior Trump administration officials told Reuters on Wednesday that the president, a Republican, had privately expressed reluctance to heed the advice of top advisers recommending he not reimpose the suspended sanctions.