The myth of nuclear zero: why the demand at the heart of the Iran talks cannot be met as written

The May 2026 memorandum of understanding between the United States and Iran is one page long and sixty days wide. It commits Iran to negotiate over suspending uranium enrichment and surrendering its stockpile of highly enriched uranium. It commits the United States to negotiate over lifting sanctions and unfreezing Iranian funds. It opens the Strait of Hormuz and starts a clock. And then, on the question that has defined every nuclear negotiation with Iran for twenty years — whether Tehran will accept “zero enrichment” as a condition for a deal — the MOU says nothing at all.

Not because the drafters forgot. Because neither side knows how to answer it.

The public framing treats this as a familiar standoff: the US demands maximum concession, Iran demands maximum retention, and somewhere in the middle sits a deal both sides can live with. That framing is wrong. Zero enrichment is not a negotiating position waiting to be bargained down. It is a demand that no state with an indigenous enrichment capability has ever accepted under any arms control agreement in history — and the technical reality of uranium enrichment is the reason why.

The machine is the machine

A gas centrifuge does not know what it is being used for. Uranium hexafluoride gas enters the rotor, spins at supersonic speed, and the heavier U-238 isotopes migrate outward while the lighter U-235 concentrates near the axis. The enriched fraction is drawn off and fed into the next centrifuge. Then the next. Then the next. String enough of them together — a cascade — and the U-235 concentration climbs: from the 0.7 percent found in natural uranium to the 3.67 percent needed for power reactor fuel, to the 20 percent used in research reactors and medical isotope production, to the 90 percent that constitutes weapons-grade material.

There is no switch labelled “civilian” and another labelled “weapons.” The enrichment level is a continuous variable. The same cascade that produces reactor fuel produces bomb material if you add stages or recycle the output as feedstock. A cascade configured for 3.67 percent can be reconfigured for weapons production in days — not by installing new equipment but by rearranging how the gas flows through equipment that already exists.

Before the February–March 2026 US-Israeli airstrikes, the IAEA estimated Iran’s breakout time from its stockpile of 60 percent enriched uranium to weapons-grade material at roughly two to four weeks. General Dan Caine, chairman of the Joint Chiefs of Staff, subsequently assessed that all three major sites — Natanz, Fordow, Isfahan — had sustained “extremely severe damage and destruction.” The Institute for Science and International Security confirmed in its post-attack assessment that Iran’s enrichment infrastructure had been severely set back: thousands of IR-1 centrifuges destroyed at Natanz, Fordow penetrated by GBU-57 Massive Ordnance Penetrators, the uranium conversion facility at Isfahan damaged.

But here’s the part that matters, and the part the zero-enrichment demand cannot reach: the strikes destroyed buildings and machines. They did not destroy knowledge. Iran’s nuclear engineering corps survived intact. So did its centrifuge design files, its materials science expertise, its manufacturing know-how. Over two decades, Iran designed and built successive generations of centrifuges indigenously — from the early IR-1, based on designs originally acquired through the A.Q. Khan network, to the IR-6, which enriches uranium roughly fifty times faster. That progression represents an indigenous capability. It lives in the heads of engineers and in the institutional memory of a programme that trained them. You cannot bomb it. You cannot negotiate it away. You cannot uninvent it.

The centrifuge generations: from rented parts to indigenous capability

Iran's centrifuge programme began with stolen blueprints. The IR-1 was a copy of the Pakistani P-1, itself derived from German URENCO technology smuggled out by A.Q. Khan in the 1970s. It was crude, unreliable, and broke down constantly. But Iran did not stop at copying. Over two decades, Iranian engineers designed the IR-2m, the IR-4, the IR-5, and finally the IR-6 — a machine so far from the original P-1 that calling it a descendant is generous. The IR-6 can enrich uranium at roughly fifty times the rate of the IR-1. Iran manufactured these machines domestically, in facilities the IAEA monitored until mid-2025. The progression from purchased components to indigenous design and manufacturing is the distinction that separates Iran from Libya — which bought P-1 parts from the Khan network but never mastered centrifuge engineering — and the reason that dismantling hardware does not constitute disarmament. The knowledge that built the IR-6 cannot be crated up and shipped out.

The claim needs precision here. The argument is not that no country has ever given up nuclear weapons or dismantled a nuclear programme. South Africa built six warheads and voluntarily dismantled them during its political transition in the early 1990s. Libya surrendered its centrifuge components in 2003. But neither case fits the pattern the zero-enrichment demand assumes. Libya never mastered centrifuge engineering — it bought parts off the Khan network’s shelf. South Africa enriched uranium through a different method entirely, using jet-nozzle technology at Pelindaba, and gave up its programme voluntarily during a domestic political transformation, not under arms control pressure from an adversary. The category that matters is states with an indigenous, mature enrichment and centrifuge-manufacturing capability — states whose own scientists designed, built, and operated their own cascades. No state in that category has ever accepted a demand to surrender the capability. Not under the NPT. Not under the JCPOA. Not at any negotiating table in any decade since 1945.

Iran is in that category. And zero enrichment is asking it to leave.

What arms control has actually done

Arms control experts have understood the physics for decades. Every durable nuclear agreement in history has been built around it rather than against it. The model that works is threshold-plus-monitoring: you don’t eliminate the capability, because you can’t verify that you’ve eliminated it. Instead, you cap what a state can do with it — enrichment levels, stockpile sizes, centrifuge numbers — and you build a monitoring architecture invasive enough to catch violations before they become weapons.

The JCPOA was the most ambitious version of this model ever constructed. Its terms were not zero enrichment. They were thresholds: 3.67 percent enrichment ceiling. A 300-kilogram limit on low-enriched uranium stockpile. Only 5,060 IR-1 centrifuges operating, at Natanz, with all others in storage under IAEA seal. Fordow converted from an enrichment facility to a research centre with no fissile material permitted. The Arak heavy-water reactor redesigned to produce minimal plutonium. Every one of these provisions assumed Iran would retain enrichment capability. The point was not to remove it. The point was to constrain it tightly enough that any move toward weapons would be detected months before it succeeded.

The monitoring went further than anything before it. Continuous surveillance cameras at every declared enrichment facility. Online enrichment monitors providing near-real-time data on what was being produced and at what level. Centrifuge production chain monitoring — not just finished machines, but the components used to build them, from maraging steel tubes to carbon fibre rotors, tracked from manufacturing floor to installation. What the JCPOA created, in the jargon of nuclear safeguards, was “continuity of knowledge”: the inspector’s ability to account for all nuclear material at all times. Not periodic snapshots. A continuous picture.

That continuity eroded in stages. Iran suspended implementation of the Additional Protocol in February 2021, in response to the US withdrawal three years earlier. Cameras stayed on but the enhanced access that had let inspectors probe beyond declared sites was gone. Then the June 2025 military strikes shattered what remained. The IAEA withdrew its inspectors for safety, and Iran’s parliament passed a cooperation-suspension law in early July 2025. A September 2025 arrangement brokered in Cairo allowed limited access to Bushehr and the Tehran Research Reactor, but the snapback of UN sanctions on September 27 triggered yet another Iranian suspension of cooperation — this time to all facilities except those two. Iran’s letter of November 20, 2025 terminated even the Cairo arrangement. Through January 2026 the IAEA managed access to only four of six remaining unaffected facilities; by February it had none. On February 28, 2026, the collapse became complete: cameras were disabled, Agency seals removed from all declared facilities, inspectors evacuated. The trajectory was visible for years: each political rupture stripped away a layer of monitoring, until the baseline that had taken a decade to build was gone.

The IAEA’s Additional Protocol — the enhanced inspection framework Iran accepted under the JCPOA — grants inspectors complementary access to any location where undeclared nuclear activities are indicated. They can take environmental samples. They can visit uranium mines and milling operations. They can inspect centrifuge manufacturing plants. But the Additional Protocol has a known limitation, one the IAEA itself acknowledges: it can verify that declared facilities are not diverting material to weapons use. It cannot certify the absence of undeclared facilities in a country the size of Iran with an advanced manufacturing base.

Iraq proved this. Throughout the 1980s, IAEA inspectors verified Iraq’s declared nuclear facilities and found no diversions. Every safeguards report came back clean. Meanwhile, Iraq ran a parallel clandestine weapons programme — a Manhattan Project-scale operation employing thousands of scientists across multiple undeclared sites — that wasn’t exposed until after the Gulf War, when inspectors with post-conflict access walked into facilities they’d never been told existed and found industrial-scale enrichment equipment. The IAEA’s own subsequent assessment was blunt: the traditional safeguards system had failed to detect what it was not designed to detect. The Iraq experience triggered the development of the Additional Protocol itself — it was the reason the enhanced inspection framework exists.

North Korea proved the limitation differently. Pyongyang accepted monitoring of declared spent fuel rods while refusing the IAEA’s first-ever request for a special inspection — the right to visit two suspected nuclear waste sites at Yongbyon that the agency believed concealed undeclared plutonium production. North Korea responded by announcing its withdrawal from the NPT in 1993, suspending the withdrawal under diplomatic pressure, then completing it a decade later and expelling inspectors entirely. Neither case was an IAEA failure to monitor what it could see. Both were demonstrations of the structural limit that the zero-enrichment demand ignores: seeing declared sites is not the same as seeing everything.

The knowledge that won't stay in the box

In the early 2000s, IAEA investigators pieced together the A.Q. Khan network — the most consequential nuclear black market in history. Khan, the father of Pakistan's bomb, had sold centrifuge designs and components to Libya, Iran, and North Korea. Libya returned the parts. Iran used them as a starting point and built something better. North Korea used them and built a bomb. The Khan network demonstrated a principle that zero enrichment cannot overcome: once nuclear knowledge has been transferred, no amount of hardware dismantlement recalls it. Khan provided blueprints for P-1 centrifuges and, in Libya's case, even a Chinese-origin nuclear weapon design. The hardware was interdicted and returned. The knowledge stayed loose. Every discussion of "zero enrichment" proceeds as though capability is something stored in facilities. The Khan network proved that it is something stored in people, in documents, in institutional memory — and that it proliferates even when the physical programme is shut down.

The JCPOA was not a zero-enrichment deal because zero enrichment is not a verifiable state. You can verify that a country is enriching below a certain threshold at declared facilities. You cannot verify that a country with thousands of trained nuclear engineers and decades of centrifuge experience has truly stopped enriching everywhere, forever. The JCPOA’s designers knew this. They built the most intrusive monitoring regime ever imposed on a functioning nuclear programme, and even it could only verify what it could see.

If the current US demand for zero enrichment were somehow accepted on paper, it would leave behind the same verification problem — because the demand is for an outcome that no inspection regime can confirm. Threshold-plus-monitoring works because it verifies something measurable. Zero enrichment demands something unfalsifiable.

The war changed everything except the underlying problem

The February–March 2026 strikes were supposed to solve the nuclear problem. They didn’t.

What they achieved was real. Natanz’s above-ground facilities were flattened, with an estimated 6,000-plus IR-1 centrifuges destroyed. Fordow, buried inside a mountain near Qom, was struck by B-2 bombers dropping GBU-57 Massive Ordnance Penetrators — the heaviest conventional bombs in the US arsenal. General Caine assessed all three sites had sustained extremely severe damage. The ISIS post-attack assessment concluded that Iran’s enrichment programme had been significantly set back and that Iran did not appear able to enrich uranium in any significant manner or manufacture centrifuges in significant numbers.

But “set back” is not “eliminated.” And the distinction is the entire argument.

What the strikes could not reach is the problem that zero enrichment cannot solve either: the knowledge, the engineers, the design files, the manufacturing capability that exists independently of any specific facility. Satellite imagery analysed by ISIS in early 2026 showed that even as Natanz lay in ruins, Iran was clearing access routes and beginning to construct new roofing over damaged structures at Isfahan. A programme can be rebuilt. The Pentagon’s own post-strike assessment after Operation Midnight Hammer estimated the setback at approximately two years — not permanent elimination but a delay. A capability that lives in human capital regenerates unless the humans themselves are removed, and nobody is proposing that.

The strikes also completed the destruction of the monitoring architecture that the preceding months had already gutted. Iran had been withdrawing from IAEA cooperation in stages since the June 2025 strikes triggered the first inspector evacuation; the Cairo arrangement, the snapback, the November 2025 termination letter had each stripped away another layer. GOV/2026/8, the IAEA’s board report of February 27, 2026 — the last verified snapshot before everything went dark — recorded 440.9 kilograms of 60 percent enriched uranium, already acknowledging that the agency had lost continuity of knowledge with respect to centrifuge production and enrichment material inventory. On February 28, the process became final: cameras disabled, seals removed from all declared facilities, inspectors evacuated. IAEA Director General Rafael Grossi said the agency’s ability to provide assurances about Iran’s nuclear programme had been “fundamentally compromised.”

Any new agreement now starts from a position that the JCPOA never had to contend with: material-accounting blindness. The baseline that took years to build — the continuous picture of where every gram of enriched uranium was and what every centrifuge was doing — is gone. Rebuilding it requires Iranian cooperation that doesn’t currently exist, and it requires starting from scratch in a country whose facilities have been bombed and whose monitoring infrastructure has been dark for months.

Then there is the stockpile. The best available evidence — a March 2026 analysis by the Bulletin of the Atomic Scientists and statements from Grossi himself — suggests that Iran transferred the bulk of its highly enriched uranium to underground tunnels at Isfahan before the June 2025 Israeli strikes, Operation Rising Lion. Grossi stated the agency believed approximately 200-plus kilograms of 60 percent enriched uranium was stored there. The pre-strike total was roughly 460 kilograms at 60 percent — enough, if further enriched to 90 percent, for seven or eight weapons. Where the rest is — in the Natanz rubble, at undisclosed locations, or destroyed — nobody can say with certainty. The monitoring blackout means the IAEA’s own figures are estimates, not verified accounts.

Two operations, one problem

The phrase "the US airstrikes" is shorthand for a two-phase, two-country military operation whose effects are still contested. In June 2025, Israel launched Operation Rising Lion — a strikes campaign targeting Iranian nuclear and military infrastructure. US forces joined four days later under Operation Midnight Hammer, striking Natanz, Fordow, and Isfahan directly. Iran appears to have anticipated the assault and transferred its most sensitive nuclear material to Isfahan's underground tunnel complex before the operation began. Then in February–March 2026, a second US-Israeli campaign struck the same sites again. The sequencing matters: Iran's pre-strike transfer of HEU to Isfahan, which the June 2025 strikes did not fully destroy, means that the material the US now demands Iran surrender was moved precisely because of the military operations that preceded the demand. The war created the stockpile problem it is now asking diplomacy to solve.

And the political landscape has been remade. Ali Khamenei was killed in the February 28 strikes. His son Mojtaba was named supreme leader by the Assembly of Experts on March 8, in a process that Foreign Affairs described as shaped by IRGC pressure, with commanders making “repeated contacts and psychological and political pressure” on assembly members. Mojtaba Khamenei has issued a directive that Iran’s enriched uranium will not leave the country. A new supreme leader who came to power through IRGC backing, in the aftermath of his father’s assassination by the countries now demanding he surrender the nuclear programme — the political space for capitulation is not narrow. It is nonexistent.

The MOU’s nuclear section reflects all of this by deferring all of it. The US framing is “no dust, no dollars” — Iran surrenders its highly enriched uranium before any economic relief flows. But that is an opening position for the 60-day window, not a settled term. Where the stockpile goes — out of Iran, which Mojtaba Khamenei has ruled out, or into some form of international custody within Iran, which the US has not accepted — is unresolved. How an enrichment suspension works, how long it lasts, who verifies it, what happens when a future US president decides the deal isn’t working — all of this is deferred.

The 60-day clock ticks. The enrichment question waits. The stockpile question waits. The verification question — the one that actually determines whether any deal can hold — waits too.

The moratorium dispute is a proxy for the question neither side will ask

What’s being argued about in the 60-day window is a number. The US proposed a twenty-year enrichment moratorium. Iran countered with five years. Trump initially rejected his own team’s proposal — “I don’t like the 20 years,” he told the New York Post — before indicating he could accept it with “real” guarantees.

Twenty years versus five. It sounds like a haggling distance. It isn’t.

The US theory is that a dormant programme degrades over two decades — that twenty years of zero enrichment erodes the institutional knowledge and manufacturing base enough to extend breakout timelines permanently. There is a logic to this: engineers retire, tacit knowledge fades, manufacturing equipment rusts. But the theory assumes something the previous sections have shown to be false — that enrichment capability is primarily stored in hardware rather than in people and institutions. Iran reconstituted centrifuge manufacturing after setbacks before. The degradation theory also assumes that the commitment itself will hold for twenty years, which brings up the second problem.

Iran’s theory is that any commitment longer than the shortest political cycle is a fiction. And Iran has specific, recent, devastating evidence for this view: the Trump administration withdrew from the JCPOA in 2018 via executive action, without a new Iranian violation, three years into a ten-year agreement. No congressional vote. No trigger clause. One president signed it; the next unsigned it. The constitutional architecture of the United States does not distinguish between an executive agreement that lasts five years and one that lasts twenty — both are revocable by executive action, and treaty ratification requiring sixty-seven Senate votes is politically unreachable for any Iran deal in the current or any foreseeable Senate. Neither duration comes with a guarantee the US system can actually provide.

This is not a hypothetical concern. It is the specific mechanism by which the last nuclear deal died.

But the real problem with the duration fight is deeper than either side’s position. A twenty-year moratorium with weak verification is worth less than a five-year moratorium with robust verification. Duration tells you how long a commitment is supposed to last. Verification tells you whether cheating will be caught. The first is a political promise. The second is an engineering problem. And engineering problems have solutions — solutions that would make the moratorium’s length secondary, because cheating would be detected and responded to regardless of what either side promised on paper.

Neither side is asking the verification question in the 60-day window. Because answering it honestly would require each to name what its own political system cannot deliver — the US would have to explain how any agreement survives the next election, and Iran would have to explain how the IRGC honours what the Foreign Ministry signs. That’s harder than arguing about numbers. So they argue about numbers.

What Tehran cannot deliver, and why that is not an Iranian argument

Iran’s nuclear programme was never just a technical project. It was a sovereignty argument, built deliberately over three decades. The domestic case for enrichment rested on a specific claim: that nuclear energy dependent on Western-supplied fuel would leave Iran hostage to the same sanctions that had already crippled its economy. Khamenei — the elder — made this explicit in a televised speech in June 2025, months before his death: “Without enrichment and the ability to produce nuclear fuel, even having 100 nuclear power plants would be useless — because to acquire fuel, we would have to be dependent on the US, and they could set dozens of conditions.”

That is not bluster. It is the load-bearing political rationale for a thirty-year programme. It would be true regardless of who runs Iran, because the sanctions history that produced it is real.

Iran’s sovereignty narrative was a deliberate political construction, not an inherited fact — built strategically over three decades to make a specific capability politically untouchable. Zero enrichment doesn’t just ask Iran to give up a capability. It asks Iran to concede the argument that justified building the capability in the first place. No political actor in Tehran can make that concession and remain in power. Not because Iranian leaders are uniquely stubborn, but because the programme was constructed specifically to make that concession politically impossible — and a constructed constraint is no less real for being constructed.

Mojtaba Khamenei’s situation makes this worse, not because of his character but because of the structure around him. He came to power with IRGC backing, through a process critics described as shaped by military pressure. He owes his position to the Revolutionary Guards. The previous supreme leader — his father — was killed by the countries now sitting across the negotiating table. The institutional logic is plain: a leader in that position has less room to concede on the programme the Guards consider their deterrent than any of his predecessors had. This is not about Mojtaba Khamenei. It is about the incentive structure around anyone who holds that office under these specific conditions.

The guards and the programme

"Iran's position" on enrichment is not a single position. The IRGC controls much of the nuclear programme operationally, viewing it as a strategic deterrent asset separate from the civilian energy rationale. In March 2022, the IRGC established a "Command for the Protection and Security of Nuclear Centres," formalising its institutional stake. The gap between the civilian government's negotiating stance and the Guards' actual institutional interest is structural, not incidental. Any agreement the civilian government signs must also be honoured by an organisation whose interests, budget, and political identity are bound to the programme's continuation. That gap is why the question of Iranian "compliance" is not a question about whether a president or foreign minister means what he says. It is a question about whether the institutions that operate the programme will follow through on commitments made by the institutions that negotiate.

And then there is the Libya lesson, as it actually operates in Tehran — which is to say, the opposite of how it operates in Washington. US and Israeli officials have repeatedly cited Libya’s 2003 disarmament as the model for what Iran should do. Gaddafi surrendered his nuclear and chemical weapons programmes. The West welcomed him back. Trade resumed. Diplomatic relations normalised. Eight years later, NATO warplanes enforced a no-fly zone over Libya, rebels overran Tripoli, and Gaddafi was dragged from a drainage pipe and killed on camera.

Iranian officials have been citing that sequence for twenty years. Not as an abstraction. As a case study in what happens when you give up the only thing that makes attacking you costly. The Atlantic Council’s own analysis of the Libya-Iran comparison acknowledges that Tehran’s political calculus today is fundamentally different from Tripoli’s in 2003. The Wilson Center’s retrospective on Libya’s dismantlement notes that the case has been used by proliferation-minded states as direct evidence against disarmament.

The 2026 war did not challenge that lesson. It confirmed it in the most literal way possible: the country that disarmed was destroyed. The country that didn’t was attacked anyway — but its nuclear infrastructure, though badly damaged, survived precisely because it had been built to be hard to destroy. For anyone in Tehran’s security establishment, the conclusion is not subtle.

A signed agreement is not compliance. And compliance on this issue is something the Iranian political system is structurally incapable of producing — because the programme is wired into the regime’s foundational architecture, reinforced by thirty years of political investment, and now cemented by a war that killed the previous supreme leader. The US demand for zero enrichment cannot achieve the US goal even if an Iranian negotiator signs a piece of paper granting it.

The narrower problem

If zero enrichment is unachievable and the moratorium dispute is a proxy fight, what would an agreement that actually holds look like?

The answer is not a mystery. Arms control experts have been describing it for years. The goal is not preventing Iran from possessing enrichment knowledge — that ship sailed decades ago. The goal is ensuring that if Iran enriches beyond agreed levels or at undeclared facilities, it gets caught fast enough that the response can be credible. Not zero risk of cheating. Risk high enough to deter — breakout timelines long enough that detection triggers a response before weapons-grade material is produced in quantity.

The verification architecture this requires has three components: access, continuity, and speed. Access means the IAEA Additional Protocol in full force — not just basic safeguards over declared facilities, but the enhanced framework allowing complementary access wherever undeclared activities are suspected, backed by national technical means sharing between US and allied satellite intelligence and IAEA inspectors. Continuity means restoring the baseline destroyed by the 2025–2026 monitoring collapse — surveillance cameras, centrifuge production chain monitoring, material accountancy rebuilt from scratch, because the continuous picture of where every gram of enriched uranium sat and what every centrifuge was doing no longer exists. Speed means challenge inspection rights with response times measured in hours, not the twenty-four days the JCPOA’s managed-access provision allowed Iran to respond to IAEA requests — a window arms control critics argued was wide enough to conceal small-scale violations.

Then there is the consequence architecture — what happens when someone cheats. Resolution 2231’s snapback mechanism was designed to be veto-proof: it inverted normal Security Council procedure so that sanctions relief required an affirmative vote to continue, meaning any single P5 member could block continuation and trigger automatic reimposition. The E3 invoked it on August 28, 2025; UN sanctions snapped back on September 27, 2025; Russia and China tried to block it and failed. The legal engineering worked. The political credibility of enforcement collapsed anyway, because the mechanism’s mandate under Resolution 2231 expired on October 18, 2025 — and because the US itself, in 2018, had withdrawn from the JCPOA the snapback was designed to enforce. The enforcing party had already destroyed the enforcement architecture. Any new consequence mechanism needs to survive what the last one didn’t: a change of US administration.

Every time the US exits a nuclear agreement, the monitoring architecture it took years to build collapses and must be rebuilt from scratch — assuming the other side cooperates, which it has no reason to do after being abandoned by the party that demanded the architecture in the first place. The IAEA’s current blindness on Iran is a direct downstream consequence of the 2018 withdrawal. Each political rupture since then stripped away another layer of verification, until nothing was left. Building a new agreement requires building a new monitoring baseline and some mechanism — nobody has found it yet — for that baseline to survive a future US president who decides the deal isn’t working.

Then there is Israel. Any durable deal requires Israel not to bomb its way out of it the moment it perceives a threshold being crossed. Israel has demonstrated — twice, in June 2025 and February 2026 — that it will act unilaterally against Iranian nuclear infrastructure. An agreement that does not include Israeli acquiescence lasts until the next Israeli strategic assessment, and no longer. Analysis from the Atlantic Council and the Institute for National Security Studies in Tel Aviv both identify Israeli buy-in as an operational constraint, not a diplomatic nicety.

The technical elements of a workable verification architecture are not in dispute among the people who study this for a living: centrifuge restrictions on advanced models, stockpile limits below the weapons-material threshold, the monitoring architecture described above. Achievable engineering problems, all of them.

The political elements are the hard part. US domestic durability — the ability to make a commitment that survives a change of president. Israeli acquiescence — the willingness to accept an agreement that permits some enrichment and to refrain from unilateral action as long as the agreement holds. IRGC compliance — the willingness of the organisation that operates the programme to honour commitments made by the civilians who negotiate. These are exactly what the 60-day clock is running out on. None of them appear in the MOU.

The problem is narrower than the public debate describes: not zero enrichment, which is a demand for something unfalsifiable, but verification architecture that makes enrichment above agreed thresholds detectable and costly enough to deter. A smaller target than the one currently being aimed at. Also a harder one to hit — because it requires each side to build institutional capacity that its own political system is currently designed to prevent.

The 60 days will expose these obstacles rather than resolve them. The technical architecture is available. The political will to build it requires each side to name what it cannot deliver — and naming what you cannot deliver is the one thing neither Washington nor Tehran has shown any capacity to do.

Achievable and likely are not the same thing. Confusing them is exactly the error the current debate keeps making. The clock is running. The question it’s counting down to is not whether a deal gets signed. It is whether anyone at the table is solving the right problem.

Penafian Gen AI

Beberapa konten halaman ini dibuat dan/atau diedit dengan bantuan AI Generatif.

Media

MRBM (Medium range ballistic missiles) and IRBM (Intermediate range ballistic missiles) Comparison. – Wikipedia

Key Sources and References

IAEA Board of Governors, “NPT Safeguards Agreement with the Islamic Republic of Iran,” GOV/2026/8, February 27, 2026. https://www.iaea.org/sites/default/files/gov2026-8.pdf

Institute for Science and International Security, “Post-Attack Assessment of the First 12 Days of Israeli and U.S. Strikes on Iranian Nuclear Facilities,” June 24, 2025. https://isis-online.org/isis-reports/post-attack-assessment-of-the-first-12-days-of-israeli-strikes-on-iranian-nuclear-facilities

Institute for Science and International Security, “Comprehensive Analysis of Nuclear Facilities Targeted During the Second Phase of the Iran War,” 2026. https://isis-online.org/isis-reports/comprehensive-analysis-of-nuclear-facilities-targeted-during-the-second-phase-of-the-iran-war

Arms Control Association, “Restoring the JCPOA’s Nuclear Limits,” factsheet. https://www.armscontrol.org/factsheets/restoring-jcpoas-nuclear-limits

Arms Control Association, “IAEA Verification of the Iran Nuclear Deal: 10 Hot Issues,” July 2015. https://www.armscontrol.org/blog/2015-07-23/iaea-verification-iran-nuclear-deal-10-issues

IAEA, “Additional Protocol,” overview. https://www.iaea.org/topics/additional-protocol

IAEA, “IAEA Safeguards Overview,” factsheet. https://www.iaea.org/publications/factsheets/iaea-safeguards-overview

Bulletin of the Atomic Scientists, “Analysis: Iran likely transferred highly enriched uranium to Isfahan before the June strikes,” March 2026. https://thebulletin.org/2026/03/analysis-iran-likely-transferred-highly-enriched-uranium-to-isfahan-before-the-june-strikes/

Foreign Policy, “IAEA’s Grossi: Much of Iran’s Enriched Uranium Likely Still at Isfahan,” April 29, 2026. https://foreignpolicy.com/2026/04/29/iran-nuclear-program-iaea-grossi-isfahan-enriched-uranium-us-war-hegseth-caine/

Axios, “U.S. asked Iran to freeze uranium enrichment for 20 years, sources say,” April 13, 2026. https://www.axios.com/2026/04/13/iran-uranium-enrichment-moratorium-talks-vance

Axios, “Exclusive: What’s inside the Iran deal Trump is close to signing,” May 24, 2026. https://www.axios.com/2026/05/24/iran-deal-strait-hormuz-sanctions-nuclear

Washington Post, “Trump says Iran talks may resume this week, but opposes enrichment compromise,” April 14, 2026. https://www.washingtonpost.com/national-security/2026/04/14/trump-iran-nuclear-demands/

New York Post, Trump quoted on Iran 20-year enrichment moratorium, April 14, 2026. https://nypost.com

Times of Israel, “Trump says he’s OK with Iran suspending nuke program for 20 years if there’s a ‘real’ commitment.” https://www.timesofisrael.com/trump-says-hes-ok-with-iran-suspending-nuke-program-for-20-years-if-theres-a-real-commitment/

Times of Israel, “Trump’s emerging Iran deal forces Israel to seek guarantees, not victory.” https://www.timesofisrael.com/trumps-emerging-iran-deal-forces-israel-to-seek-guarantees-not-victory/

Khamenei.ir, “Iran has its own sovereignty, and its enrichment is none of US’ business,” June 2025. https://english.khamenei.ir/news/11709/Iran-has-its-own-sovereignty-and-its-enrichment-is-none-of-US

Al Jazeera, “Iran names Mojtaba Khamenei as new supreme leader after father’s killing,” March 8, 2026. https://www.aljazeera.com/news/2026/3/8/iran-names-khameneis-son-as-new-supreme-leader-after-fathers-killing-2

Foreign Affairs, “The New Khamenei,” March 20, 2026. https://www.foreignaffairs.com/iran/new-khamenei

Atlantic Council, “From Tripoli to Tehran: Lessons from Libya in US-Iran nuclear talks.” https://www.atlanticcouncil.org/blogs/menasource/from-tripoli-to-tehran-lessons-from-libya-in-us-iran-nuclear-talks/

Wilson Center, “Giving Up on the Bomb: Revisiting Libya’s Decision to Dismantle its Nuclear Program.” https://www.wilsoncenter.org/blog-post/giving-the-bomb-revisiting-libyas-decision-to-dismantle-its-nuclear-program

Nuclear Threat Initiative, “South Africa: Nuclear,” country profile. https://www.nti.org/analysis/articles/south-africa-nuclear-disarmament/

Security Council Report, “Iran: Vote on a Draft Resolution regarding the ‘Snapback’ of UN Sanctions,” September 2025. https://www.securitycouncilreport.org/whatsinblue/2025/09/iran-vote-on-a-draft-resolution-regarding-the-snapback-of-un-sanctions.php

IAEA, “Fact Sheet on DPRK Nuclear Safeguards.” https://www.iaea.org/newscenter/focus/dprk/fact-sheet-on-dprk-nuclear-safeguards

Atlantic Council, “To preserve ‘Rising Lion’s’ achievements, Israel must support an Iran nuclear deal.” https://www.atlanticcouncil.org/blogs/menasource/to-preserve-rising-lions-achievements-israel-must-support-an-iran-nuclear-deal/

INSS (Institute for National Security Studies), “Between A Nuclear Agreement and Active Containment: Israel and Iran’s Nuclear Program after the War.” https://www.inss.org.il/publication/iran-nuclear-program/

Iran Watch, analysis on IRGC nuclear programme control, including March 2022 establishment of IRGC “Command for the Protection and Security of Nuclear Centres.” https://www.iranwatch.org

FDD (Foundation for Defense of Democracies), “Trump Rebukes U.S. Proposal for 20-Year Moratorium on Iran’s Uranium Enrichment,” April 15, 2026. https://www.fdd.org/analysis/2026/04/15/trump-rebukes-u-s-proposal-for-20-year-moratorium-on-irans-uranium-enrichment/