A senior Iranian official told CNN the new nuclear deal proposal presented to Tehran in recent days is “incoherent and disjointed,” as sources familiar with the progress of the talks said the momentum behind negotiations to secure a new deal appears to be collapsing.

Iran is poised to reject a U.S. proposal to end a decades-old nuclear dispute, an Iranian diplomat said on Monday, dismissing it as a "non-starter" that fails to address Tehran's interests or soften Washington's stance on uranium enrichment.

CAIRO (AP) — Iranian, Egyptian and U.N. leaders met in Cairo on Monday to discuss Iran’s nuclear program after the U.N. nuclear watchdog agency in a confidential report said Iran is further increasing its stockpile of uranium enriched to near weapons-grade levels.

Foreign Minister Abbas Araqchi said that Iran is preparing an appropriate response to an official proposal from the United States regarding the nuclear talks mediated by Oman,” the IRNA Iran state media report said.

Iran is currently reviewing a formal U.S. nuclear deal proposal as both sides remain deeply divided over uranium enrichment limits and sanctions relief.

Iran warned it won’t strike a nuclear deal with the US unless Washington gives assurances that any agreement will include sanctions removal.

President Donald Trump believes his administration is “very close to a solution” on an Iran nuclear agreement and he has personally warned Israeli Prime Minister Benjamin Netanyahu not to disrupt the talks,

Iran is engaging on multiple diplomatic fronts as it weighs a new US proposal and braces for potential censure by the UN’s nuclear watchdog.

Iranian and U.S. delegations wrapped up a fifth round of talks in Rome on Friday and signs of some limited progress emerged in the negotiations aimed at resolving a decades-long dispute over Tehran's nuclear ambitions.

Iran is still producing nearly weapons-grade uranium amid talks with the US to wind down its nuclear program, a UN watchdog revealed Saturday, while Israel’s prime minister demanded their global allies “stop” Tehran.