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.

White House press secretary Karoline Leavitt revealed that a "detailed and acceptable" proposal was sent to Iran by Steve Witkoff.

This follows earlier reports from Monday that Iran is poised to reject a US proposal to end a decades-long nuclear dispute. The US nuclear deal proposal that was allegedly given to Iran would allow limited and low-level uranium enrichment,