The US President Donald Trump has said that says he will remove the US from the agreement with Iran that was in place during the age of Obama.
He said that the deal an "embarrassment" to him "as a citizen".
Moving against European ally advice, Trump said that he'd reimpose the economic sanctions that had been waived when, in 2015, the deal was first signed.
In their response, Iran stated that they were preparing to reinstate uranium enrichment, integral for producing both weapons and nuclear energy.
"The US has announced that it doesn't respect its commitments.", stated Iran's President Hassan Rouhani.
"I have ordered the Atomic Energy Organisation of Iran to be ready for action if needed, so that if necessary we can resume our enrichment on an industrial level without any limitations."
President Hassan Rouhani said he would "wait a few weeks" to talk to allies and various other signatories of the nuclear deal initially.
He said, "If we achieve the deal's goals in cooperation with other members of the deal, it will remain in place,"
The apparent Joint Comprehensive Plan of Action (JCPOA) curbed Iran's nuclear activities in return for the raising of sanctions that'd been instigated by the EU, US and UN.
Mr Trump had formerly expressed opposition towards the prospect that the deal had merely limited Iran's nuclear activities for a certain duration. He'd complained about failing to prohibit the creation of ballistic missiles; and had granted Iran a $100bn (£74bn) windfall of which had been used "as a slush fund for weapons, terror, and oppression" across the Middle East.
Mr Trump stated, "It is clear to me that we cannot prevent an Iranian nuclear bomb under the decaying and rotten structure of this deal,"
"The Iran deal is defective to its core."
Barack Obama, former President, who signed the deal on the US's behalf three years ago, said that Mr Trump's announcement had been "misguided".
The UK, France and Germany, whose leaders attempted to alter the mind of Mr Trump, stated that they'd "regret the decision that had been made by America. An additional signatory from the foreign ministry of Russia, stated that they were "deeply disappointed".
Not all countries expressed concern at the agreement however, with leaders from both Israel and Saudi Arabia fully supporting Trump's withdrawal."
Statement on the Iran Nuclear Deal: https://t.co/O3SpryCKkc
— Donald J. Trump (@realDonaldTrump) May 8, 2018