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.

Iran has demanded that the United States clarify exactly how sanctions will be lifted if the two sides are to reach a new agreement on Tehran’s nuclear programme. Ministry of Foreign Affairs spokesman Esmail Baghaei made the comments on Monday,

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.

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

The International Atomic Energy Agency found Iran has upped its 60%-enriched uranium stockpile from 274.8 kilograms to 408.6 kilograms — a roughly 50% jump since February.