US President Donald Trump on Monday said he would not allow any uranium enrichment by Iran, directly contradicting reports that US negotiators had offered Tehran limited enrichment rights.

“WE WILL NOT ALLOW ANY ENRICHMENT OF URANIUM!” Trump posted on Truth Social, pushing back against a proposal reportedly delivered by US envoy Steve Witkoff via Oman that would permit low-level enrichment for civilian use, according to Xinhua.

The White House defended the proposal as severe, but did not address the discrepancies. Iran criticized the US draft as containing "radical" demands and emphasized its stance on enrichment rights and securing clear sanctions relief.

Since April, the United States and Iran have undertaken five rounds of indirect nuclear talks, mediated by Oman, Xinhua reported.