Khamenei: “Not One Gram Leaves.” The IAEA Says 440 Kilograms of Iran's Near-Weapons-Grade Uranium Is Still in the Country.
- 440.9 KG60%-enriched uranium Iran possessed on the eve of the June 2025 US-Israeli strikes — per the IAEA's September 2025 verification report. The largest stockpile of near-weapons-grade material ever held by a non-nuclear-weapon state.
- ~200 KG60%-enriched uranium the IAEA believes is still in Iran — buried inside tunnels at the Isfahan complex per IAEA Director General Rafael Grossi (March 2026). The agency has not been allowed to inspect or verify the seals.
- 11Theoretical nuclear weapons the pre-strike 440.9 kg stockpile could produce if enriched further to 90% weapons-grade — per US envoy and FDD analysis. The post-strike ~200 kg figure preserves roughly five-bomb potential.
- 5XGrowth in Iran's 60%-enriched stockpile from early 2024 (~87 kg) to June 2025 (440.9 kg) — per successive IAEA Board of Governors quarterly reports. No comparable expansion exists in the history of the NPT.
- 0Iranian declared enrichment sites (Natanz, Fordow, Isfahan, Pilot Fuel Plant) the IAEA has been allowed to inspect in the current reporting period — per GOV/2026/8, February 27, 2026.
- MARCH 9, 2026Date Mojtaba Khamenei, son of Ali Khamenei, was named Supreme Leader by Iran's Assembly of Experts — one week after his father's assassination in the February 28 US-Israeli strikes. The uranium order is his.
Two senior Iranian officials spoke to Reuters this week on condition of anonymity. The substance was simple. The new Supreme Leader has decided that the country's stockpile of near-weapons-grade enriched uranium — the material you would refine further to build a bomb — is not leaving Iran. Not to Russia. Not to a third-country IAEA repository. Not under any arrangement brokered by US Special Envoy Steve Witkoff. Not under any clause the Trump administration is currently negotiating. The order is reported as a directive from Ayatollah Mojtaba Khamenei — the son of the assassinated former Supreme Leader, named to the post on March 9, 2026 — and a consensus position across the Iranian establishment.
The math is the editorial weight. The International Atomic Energy Agency's last full verification, contained in its September 2025 verification and monitoring report, recorded 440.9 kilograms of uranium enriched to 60 percent U-235 — the largest such stockpile ever accumulated by a non-nuclear-weapon state. That figure was the eve-of-strike total. Two months earlier, in May 2025, the IAEA recorded 408.6 kg. Six months before that, in October 2024, 182 kg. Two years before that, in early 2024, roughly 87 kg. The stockpile roughly quintupled in the eighteen months preceding the war.
After the June 2025 US-Israeli strikes on Fordow, Natanz, and Isfahan, IAEA Director General Rafael Grossi has reported to the Board of Governors that roughly 200 kilogramsof the 60%-enriched material is, in his estimation, still in Iran — buried in tunnels at the Isfahan complex. The IAEA has not been allowed to inspect or verify the seals. The current verification report, GOV/2026/8, records that Iran has not granted access to any of its four declared enrichment facilities during the reporting period. That is the technical reality Khamenei's order is intended to lock in place.
The Reuters-sourced reporting carried by the Jerusalem Post, Times of Israel, Haaretz, and Al Arabiya English on May 21, 2026 does not contain a verbatim public statement from Mojtaba Khamenei. The two anonymous Iranian sources describe the position in paraphrase. The paraphrase that has circulated across all four publications is the cleanest articulation we have of the line the new Supreme Leader has drawn.
“The Supreme Leader's directive, and the consensus within the establishment, is that the stockpile of enriched uranium should not leave the country.”
Two senior Iranian officials · Reuters via Jerusalem Post, May 21, 2026 (paraphrase)
The rationale the officials provided is also reported in paraphrase: relinquishing the material and sending it abroad would, in the Iranian leadership's assessment, increaseIran's vulnerability to future strikes by the United States and Israel rather than reduce it. Foreign Minister Abbas Araghchi, who has been Iran's lead negotiator at the Witkoff-led talks in Geneva and Islamabad, told CBS News in March that Iran was prepared to dilutethe stockpile under IAEA supervision — down-blending it to a lower enrichment level — but not to ship it out of the country. That is the offer that has been on the table for two months. The Khamenei directive forecloses anything beyond it.
“I offered that we are ready to dilute those enriched material, or down-blend them, as they say, into lower percentage.”
Foreign Minister Abbas Araghchi · CBS News interview, March 16, 2026
The factual record on what the IAEA actually knows is the spine of any honest accounting. On May 31, 2025, the IAEA published GOV/2025/24, its quarterly Iran verification report. Iran's overall uranium stockpile then sat at 8,413.3 kg of uranium hexafluoride. Of that, 408.6 kg was enriched to 60% U-235; 274.5 kg to 20%; 5,508.8 kg to 5%. Two weeks later, on June 12, 2025, the Board of Governors declared Iran in formal breach of its safeguards obligations — the first such determination in twenty years. The next day, Israel began striking Iranian nuclear and military infrastructure; the United States followed on June 21 with bunker-buster strikes on Fordow, Natanz, and Isfahan.
The September 2025 IAEA verification report — assembled from the last pre-strike data — established the now-canonical figure: 440.9 kg of 60%-enriched uraniumin Iranian possession on the eve of the war. Open-source forensic analysis published by the Bulletin of the Atomic Scientists in March 2026 concluded that Iran almost certainly moved the bulk of the stockpile from Fordow and Natanz to the Isfahan tunnel complex in the days before the strikes. Grossi's subsequent statements confirm the agency's working assessment: roughly 200 kg remains, and it is at Isfahan, and no one outside Iran has confirmed it with their own eyes.
The September 2024 IAEA Board of Governors resolution — passed 19-3 with the United States, United Kingdom, France, and Germany as lead sponsors — was the last formal diplomatic warning before the war. Iran's response was to announce additional cascades at Fordow and to install more advanced IR-6 centrifuges at Natanz. The 60%-enriched stockpile, which had stood at roughly 87 kg in early 2024,more than doubled in twelve months, then doubled again. That is the trajectory the strikes interrupted. It is also the trajectory Khamenei's May 21 directive signals an intent to resume.
Early 2024: ~87 kg of 60%-enriched uranium in the Iranian stockpile (IAEA quarterly reports).
October 2024:182 kg — double-digit percentage growth quarter over quarter.
February 2025:275 kg — the 51% quarterly jump that triggered the Witkoff-Araghchi talks.
May 17, 2025: 408.6 kg per GOV/2025/24.
June 2025 (pre-strike):440.9 kg — the high-water mark, sufficient for ~11 weapons if further enriched to 90%.
May 2026: ~200 kg estimated remaining at Isfahan, per Grossi. The IAEA has not been allowed inside to count it.
President Donald J. Trump (R) has put a verbatim position on Truth Social and in repeated on-camera interviews: under any deal he signs, Iran will not enrich uranium, and the United States will, working with Iran, extract or entomb the remaining material. The clearest statement is from his Truth Social account in mid-April 2026.
There will be no enrichment of Uranium, and the United States will, working with Iran, dig up and remove all of the deeply buried (B-2 Bombers) Nuclear 'Dust.' Iran will be a great Country again, but it will never have Nuclear Weapons. NEVER!
Verbatim text confirmed across The Hill, Washington Post, and CNBC coverage. Post itself remains live on Truth Social; rendered here in a static editorial card rather than an embedded iframe.
One month later, in his May 14 interview with Sean Hannity on Fox News conducted from Beijing, Trump's description of the same removal demand was substantially more relaxed. Pressed by Hannity on whether the United States would seize the 970-pound (440.9-kg) stockpile by force or entomb it beneath the bombed sites, Trump downgraded the question from existential to optical.
“I don't think it's necessary, except from a public relations standpoint. I think it's important for the fake news that we get it. I'd rather get it, to be honest with you. I just feel better if I got it. But it's more for public relations than it is for anything else.”
President Donald J. Trump (R) · Fox News · Sean Hannity interview, May 14, 2026 (verbatim)
Seven days later, Khamenei drew his line. The sequence is the editorial point. The American demand softened from a hard-removal posture to a public-relations preference — and the Iranian leadership, reading the same interview, formalized a refusal that turns even the softer Trump position into a non-starter.
The Trump administration's sanctions track has continued in parallel. On May 19, 2026— two days before the Khamenei directive was reported — the Treasury Department's Office of Foreign Assets Control sanctioned Amin Exchangeand an associated network of front companies in the United Arab Emirates, Turkey, Hong Kong, and China. The network had facilitated hundreds of millions of dollars in transactions for sanctioned Iranian banks and for entities linked to Iran's oil and petrochemical sectors. Earlier this year, OFAC sanctioned Chinese refinery Hengli Petrochemical— one of Iran's largest oil buyers — and dozens of ships in Iran's shadow-fleet network.
Treasury Secretary Scott Bessent (R) stated in the May 19 designation that the United States “will continue to maintain maximum pressure on Iran and its ability to access the international financial system.” Secretary of State Marco Rubio (R) has urged European E3 governments (UK, France, Germany) to move on snapback sanctions under UNSCR 2231 before the October 2025 sunset expired — the snapback process did, in fact, complete, restoring pre-JCPOA UN sanctions to legal force.
Iran has become a threshold nuclear-weapons state. The IAEA Board of Governors documented the safeguards breach. The Treasury Department continues max-pressure designations. The President's position is clear: no enrichment, no weapons, full IAEA verification. The alternative is on the table and Iran knows what it is.
Substance cross-referenced from State Department briefings and Rubio's appearance on Fox News; rendered as a hand-rolled editorial card for transparency rather than an X iframe.
The Director General reports that during the current reporting period, Iran did not provide access to the Agency to any of its four declared enrichment facilities — Natanz, Fordow, Isfahan, or the Pilot Fuel Enrichment Plant. The Agency's ability to verify the stockpile of highly enriched uranium previously declared by Iran remains seriously affected. (GOV/2026/8)
The Witkoff-Araghchi process is, at the working level, an attempt to translate Trump's zero-enrichment demand into an actual technical regime that Iran will accept. Three scenarios have been discussed in published reporting. Out-of-country storage— ship the stockpile to Russia or to a neutral IAEA repository — was the model that produced the largest verification confidence under the 2015 JCPOA. Khamenei's directive forecloses it. On-site dilution under IAEA supervision— Araghchi's public offer — preserves Iranian sovereignty but leaves the now-diluted material inside Iran and re-enrichable. It is the most likely landing zone if a deal happens. Entombment— concrete-and-rebar burial of the Isfahan tunnels with the material inside — is the remaining option Hannity asked about and Trump said could work. It would foreclose verification entirely.
Israeli Prime Minister Benjamin Netanyahu told CBS News in May 2026 that, from Israel's perspective, the war is not over until the material is removed — not diluted, not entombed, removed. That position is closer to the original Trump Truth Social line than to the May 14 Hannity-interview version. The Israeli Mossad chief and IDF Chief of Staff are reported by Reuters and the Times of Israel to share the position.
The May 21 directive is the first major foreign-policy statement attributed to Iran's new Supreme Leader. Mojtaba Khamenei, 56, a mid-ranking cleric with close operational ties to the Islamic Revolutionary Guard Corps, was named to the post on March 9, 2026— nine days after his father, Ali Khamenei, was killed in the February 28 US-Israeli strikes that opened the second phase of the war. The Assembly of Experts deliberated from March 3 to March 8 under what wire-service reporting characterized as “heavy pressure” from the IRGC. Ali Khamenei had publicly opposed his son's succession during his lifetime — in part because dynastic succession is ideologically incompatible with the 1979 Revolution's rejection of the Pahlavi monarchy. The IRGC's preference prevailed.
The political reading is straightforward. The new Supreme Leader owes his position to the IRGC and to the security apparatus that opposed any 2015-style restraint on Iran's nuclear posture. President Masoud Pezeshkian (the moderate elected in 2024) and Foreign Minister Araghchi now negotiate inside a framework set by a Supreme Leader who was installed precisely because he was expected to refuse concessions of this kind. The May 21 directive is the confirmation of that expectation.
The stockpile. 440.9 kg of 60%-enriched uranium documented by the IAEA on the eve of the June 2025 strikes. Roughly 200 kg estimated by IAEA Director General Rafael Grossi to remain at Isfahan, in tunnels, uninspected.
The order.Two senior Iranian sources tell Reuters that Supreme Leader Mojtaba Khamenei has directed the material to remain inside Iran — no out-of-country storage, no shipment to Russia, no third-country IAEA repository. Dilution under IAEA supervision is the ceiling of what Iran will accept.
The American demand.President Trump's published position remains zero enrichment and full removal; his May 14 Hannity-interview comments framed removal as mostly “public relations.” The gap between the hard line and the soft line is now wide enough to host two incompatible diplomatic strategies.
The verification regime. Per GOV/2026/8, Iran has granted the IAEA access to none of its four declared enrichment facilities in the current reporting period. The agency cannot, today, confirm what the stockpile is, where it is, or whether the seals remain intact.
The leverage. Treasury continues max-pressure designations under Sec. Bessent (R); UNSCR-2231 snapback sanctions restored pre-JCPOA UN measures in October 2025; Israel maintains the position that the war is not over until the material leaves Iran. The next strike option is postponed, not closed.
The directive from a Supreme Leader installed by the IRGC against his father's wishes does not, by itself, end the diplomatic process. It does, however, define the outermost boundary of what Iran will sign. Anything outside that boundary will be settled by force or not at all.