Trump earlier in the day said he once again would extend USA sanctions relief for Iran, as required under the deal in exchange for curbs on Iran's nuclear activities, but he intends to pull the United States out the agreement unless it is strengthened within months.
Iran will never renegotiate the 2015 nuclear deal despite the us pressures, Iran's Foreign Ministry said on Saturday.
"Despite my strong inclination, I have not yet withdrawn the United States from the Iran nuclear deal".
Trump is also urging Congress to reform USA law so the president is no longer required to declare every 90 days whether he thinks Iran is in compliance, or to renew sanctions waivers every 120 or 180 days.
On a tweet on Friday, Mohammed Javad Zarif, the foreign relations minister in Iran said that the U.S. must be in strict adherence to the terms of the deal just like what was expected of Tehran.
As a signatory to the global Non-Proliferation Treaty, Iran has committed to not building nuclear weapons, even after the restrictions on its program lapse, and it is entitled to use nuclear technology for peaceful purposes. It also said Iran would not allow the deal to be linked to other issues, following the president's suggestion the deal be tied to Iran limiting its long-range ballistic missile program.
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Iran vowed on January 13 to retaliate against the sanctions on Larjani.
A key element of Trump's plan is that sanctions will be reimposed - or "snap back" - automatically if Congress finds Iran to be violating the terms of the accord. American laws governing those sanctions require the waivers to be renewed every several months.
While Most countries around the world supported the Iran deal, USA main allies in the Middle East Israel and Saudi Arabia publicly opposed it and accused Obama of abandoning them in order to secure the deal with Iran. But it has also said it will "shred" the deal if Washington quits.
The deal on Iran's nuclear program was reached between Iran and six worldwide mediators (the United Kingdom, Germany, China, Russia, the United States, and France) on July 14, 2015.
The EU's foreign affairs chief, Federica Mogherini, said, "The deal is working - it is delivering on its main goal which means keeping the Iranian nuclear program in check and under close surveillance".
"My impression talking to Europeans is, yes, they want to salvage the deal", but imposing new requirements on Iran may give it reason to walk away.
French President Emmanuel Macron called Trump on Thursday and stressed France's determination to see "the strict application of the deal and the importance of all the signatories to respect it". It prevents Iran from developing nuclear weapons while offering sanctions relief to allow it to participate in global commerce and banking. "The Iran nuclear deal makes the world safer".