[Video below.] Iranian representatives informed American officials during high-level negotiations last month that the Islamic Republic had accumulated enough enriched uranium to produce 11 nuclear weapons, according to President Donald Trump’s special envoy.

In an interview with Fox News host Sean Hannity, envoy Steve Witkoff disclosed that Iranian negotiators openly acknowledged the size and potency of their stockpile at the outset of discussions.

“Both the Iranian negotiators said to us directly with, you know, no shame, that they controlled 460 kilograms of 60% [enriched uranium],” Steve Witkoff told Fox News host Sean Hannity, “and they’re aware that that could make 11 nuclear bombs, and that was the beginning of their negotiating stance.”

Witkoff and Jared Kushner, President Trump’s son-in-law, participated in three separate rounds of indirect negotiations with Iranian officials. The talks began in Oman on Feb. 6 and concluded in Geneva, Switzerland, on Feb. 26. The meetings were viewed as a final diplomatic attempt to head off American military action against Iran.

According to Witkoff, the Iranians began the discussions by asserting what they described as a fundamental right to continue enriching uranium.

“Jared and I opened up with the Iranian negotiators telling us they had the inalienable right to enrich all their nuclear fuel that they possessed. That’s how they opened up,” Witkoff recounted.

He said the U.S. delegation immediately pushed back, conveying President Trump’s position.

“We, of course, responded that the president feels we have the inalienable right to stop you dead in your tracks,” he continued.

Witkoff described the tone of the exchange as tense from the start, saying the Iranian team insisted enrichment would remain the baseline for any agreement.

“They then went on to say that beyond the inalienable right to enrich, that that was going to be their starting point. And Jared and I just sort of looked at ourselves flummoxed and said, ‘Well, we’re really in for it now.’”

Before the Geneva session, Witkoff had drawn global attention by warning that Iran was close to producing weapons-ready nuclear material, saying it was “probably a week away from having industrial-grade bomb-making material.”

Speaking further on Monday, he elaborated on those concerns and detailed the scale of Iran’s nuclear inventory.

“I know this: They have 10,000, roughly, kilograms of fissionable material. That’s broken up into roughly 460 kilograms of 60% enriched uranium, another 1,000 kilograms of 20% enriched uranium …They manufacture their own centrifuges to enrich this material. So, there’s almost no stopping them. They have an endless supply of it.

“The 60% material, Sean, can be brought to 90%, that’s weapons-grade, in roughly one week, maybe 10 days at the outside. The 20% can be brought to weapons-grade inside of three to four weeks.”

Witkoff said the Iranian officials appeared confident about the progress of their program and the manner in which they advanced it.

“They were proud of it,” Witkoff went on. “They were proud that they had evaded all sorts of oversight protocols to get to a place where they could deliver 11 nuclear bombs.”

He added that the U.S. side presented an alternative proposal intended to eliminate the need for Iran to enrich uranium domestically. Under that offer, the United States would supply nuclear fuel for civilian purposes over the next decade, provided it was not diverted to weapons development.

“They rejected that, which told us at that very moment that they had no — no notion of doing anything other than retaining enrichment for the purpose of weaponizing.”

As joint U.S.-Israeli military operations against Iran moved into their fourth day, Witkoff characterized Tehran’s approach at the negotiating table as unrealistic and confrontational.

With the US-Israeli war against Iran entering a fourth day, Witkoff described Tehran’s negotiating position as “silly,” but added: “They thought they could strong-arm us.”

He said President Trump had tasked him and Kushner with determining whether Iran was prepared to meet Washington’s core demands, which went far beyond the nuclear issue alone.

“President Trump sent me and Jared there to really determine on his behalf whether they were serious about doing a deal that addressed his objectives, which are elimination of their missile program; elimination of their advocacy and support for proxies, which is destabilizing the entire Middle East; elimination of their navy, so we can have freedom of the seas and not be threatened with the shutdown of the Gulf [Strait] of Hormuz; and finally, no nuclear enrichment that can get them to weapons-grade, which means no nuclear bomb.

“And we went in there and tried to make a fair deal with them, and it was very, very clear that it was — that it was going to be impossible, probably by the end of the second meeting. But we then went back for the third meeting [in Geneva] just to give it the last college try,” Witkoff went on.

“It was not positive, that meeting.”