The Associated Press cited unnamed administration officials saying lawmakers had made progress in amending United States legislation that governs Washington's participation in the landmark agreement, allowing Trump to extend relief from economic sanctions to Tehran.
"We have to wait for their decision; as far as Iran's stance, we have made the necessary predictions about any scenario and all options for different situations are on the table, depending on what the United States decides to do", Qassemi said.
But the angst in Berlin, Brussels, London and Paris underlined what is at stake: the mercurial USA president is quite capable of sabotaging the agreement.
In defiance of Mr Trump's efforts to withdraw Washington's involvement, the Europeans have sought to cast the battle to save the deal as important to the principle of non-proliferation. Trump openly supported those protesters on Twitter. During his campaign, Trump promised to dump it, calling the it "the worst deal ever".
The ban on Iran dealing in enriched uranium ends in 2025 and while Iran maintains it wishes to develop an energy industry after that point, the enriched uranium can also be used to make nuclear weapons.
Sanders did not say when an announcement would be made. The State Department is not now planning a rollout for the announcement on Friday.
By thus "decertifying" the arrangement, he opened a window for Congress to reimpose sanctions, but to date, it has not done so - leaving the issue of the waivers.
"Europeans have so far failed to convince Iran that they can maintain the deal without the United States", he went on to say.
There is broad global support for all signatories to the JCPOA to remain committed to keeping Iran from restarting nuclear enrichment. It has said it will stick to the accord as long as the other signatories respect it, but will "shred" the deal if Washington pulls out.
What does Mr Trump want to change?"As the Iranian people suffer, their government and the IRGC fund foreign militants, terrorist groups, and human rights abuses". "So, I think the Europeans should be aware of that".
At a news conference after meeting Iranian Foreign Minister Mohammad Javad Zarif on Thursday, representatives of the European Union, the UK, France and Germany reiterated their support for the nuclear deal they helped negotiate.
In October, the administration, for the first time, refused to certify Iran's compliance.
"It is legitimate and right that we should in parallel - not connected with the JCPOA - but in parallel we should focus on what Iran can do to resolve the appalling crisis in Yemen, to help push forward a peace in Syria and to help resolve other questions in the region", Johnson said.
"Given the importance of JCPOA these days, and in particular considering the U.S. destructive policies, based on talks we've had, we agreed to have a consultative meeting between Iran and the three European Union members", said Zarif, according to state broadcaster IRIB.
The trigger points would address strengthening nuclear inspections, Iran's ballistic missile program and eliminate the deal's "sunset clauses" under which some of the restrictions on Iran's nuclear program expire over time.
They are expected to advise that the USA remain part of the nuclear agreement.