On March 4, 2026, as American and Israeli strikes entered their fifth day, an Iranian military official told the semi-official ISNA news agency that Iran’s “final effective missiles” would target the Dimona nuclear reactor in southern Israel, and all energy infrastructure across the Middle East, if the United States and Israel pursued regime change.

The words were chosen carefully. “Final effective missiles” does not describe an arsenal with depth. It describes a last punch. A regime watching its military infrastructure disintegrate in real time, calculating what it can still hit and what would hurt the most.

Iran does not have a nuclear weapon. It does not need one. The nuclear weapon it would use is already built, already loaded with six decades of radioactive material, and already standing in the Negev desert. Israel built it.

The Shimon Peres Negev Nuclear Research Center lies thirteen kilometers southeast of the city of Dimona. Construction began in 1958 with secret French assistance. When American officials asked about the site, Israeli officials told them it was a textile factory. The reactor became active between 1962 and 1964. By 1967, Israel had assembled its first nuclear devices.

Israel has never confirmed possessing nuclear weapons. It maintains a policy of strategic ambiguity: it neither confirms nor denies. But declassified American intelligence documents, independent assessments, and the testimony of former Dimona technician Mordechai Vanunu, who revealed the facility’s six-story underground plutonium separation plant to the Sunday Times in 1986, have established what the policy of ambiguity was designed to obscure.

Israel, which neither confirms nor denies possessing nuclear weapons, is listed by the Stockholm International Peace Research Institute (SIPRI), the Bulletin of the Atomic Scientists, and the Federation of American Scientists as one of nine nuclear-armed states.

The reactor has produced an estimated 800 kilograms of weapons-grade plutonium, with additional spent nuclear fuel, radioactive waste, and tritium accumulated over sixty years of continuous operation.

The airspace over Dimona is permanently closed. During the 1967 Six-Day War, Israeli air defenses shot down one of their own fighter jets when it inadvertently flew over the facility. The building sits 25 kilometers from the Jordanian border, 75 kilometers from Egypt, and 85 kilometers from Jerusalem.

That is the building Iran just threatened to hit with everything it has left.

Iran would not send one missile at Dimona. It would send all of them.

Iran’s doctrine of saturation has been refined through four escalation cycles: 120 ballistic missiles in April 2024, 200 in October 2024, 550 over twelve days in June 2025, and a comparable high volume in the initial four days of the current conflict, before combined U.S.-Israeli strikes destroyed over 300 ballistic missile launchers and reduced Iranian ballistic missile fire by 86-90 percent per CENTCOM and IDF estimates. Each round has launched more missiles, faster, with increasing complexity: waves of drones to exhaust interceptors, cruise missiles flying low to complicate radar tracking, and then the ballistic salvo aimed at penetrating whatever remains of the defensive ceiling.

The results have improved with each cycle. In October 2024, approximately one quarter of Iranian missiles penetrated Israeli defenses. At least 32 struck the Nevatim airbase directly. Others hit near Tel Nof, believed to store nuclear weapons, causing secondary explosions. Missiles or debris fell near Dimona itself.

A concentrated salvo directed at a single point in the Negev, every remaining missile aimed at one building, would force Israel’s layered defense systems to perform at maximum capacity in one narrow sector. The Al Habtoor Research Centre estimated in 2025 that 10 to 12 coordinated strikes with penetrating warheads would be required to cause catastrophic damage to both the surface reactor and the underground facilities.

In October 2024, Iran achieved 32 impacts on a single airbase with a 200-missile salvo. Even with Iran’s launch capacity now severely degraded, the arithmetic, if it gambles its remaining missiles in one final push, is not in Dimona’s favor.

A missile strike on Dimona would not produce a nuclear explosion. Reactors do not detonate like bombs. What it would produce is worse in one specific sense: duration.

In 2008, the Arms Control Association simulated an attack on Dimona using the U.S. Department of Defense’s Hazard Prediction and Assessment Capability model. The radioactive plume from an attack with the reactor operating at 150 megawatts thermal would travel northwest over Dimona (population approximately 35,000 to 40,000), then toward Beersheba, before scattering toward Israel’s coastal plain, home to approximately five million people. Cesium-137 releases were estimated at 1.1 percent of Chernobyl levels.

The Al Habtoor study projected mandatory evacuation of 200,000 residents within a 30-kilometer radius, a permanently uninhabitable zone of 2,500 to 3,000 square kilometers, complete agricultural shutdown across the Negev, and potential evacuation of tens of thousands in Jordan’s border regions.

But cesium-137, the primary contaminant at Chernobyl, has a half-life of 30 years. The zone around Chernobyl will be inhabitable again in roughly three centuries. Dimona’s signature contaminant is different. Plutonium-239 has a half-life of 24,100 years. It remains dangerous for 10 to 20 half-lives. That is up to half a million years. Although the total radioactive release would likely be a fraction of Chernobyl’s due to Dimona’s smaller power and inventory, inhaled as microscopic particles, Pu-239 lodges in lungs, bones, and liver with a biological half-life of 200 years. Once inside the body, it stays for life.

A successful strike on Dimona would not destroy Israel. It would scar it with a wound that outlasts every civilization currently on earth.

A rational regime would not trade its own annihilation for radiological contamination of its enemy’s southern desert. The calculus does not balance. Israel would survive, damaged but intact. Iran would not survive Israel’s response.

But Iran knows that, due to Israel’s small size and high population density (approximately 446 people per square kilometer versus Iran’s 57), even a fraction of its remaining arsenal could inflict disproportionate damage, contaminating the densely populated coastal plain home to around five million people.

But a rational regime does not announce the target of its final missiles on state media. A rational regime does not name the building. A rational regime, watching its air defenses collapse and its launchers burn, negotiates. It does not promise to contaminate the land it claims to want to liberate.

The Islamic Republic has not always operated strictly within the conventional cost-benefit logic assumed by Western deterrence theory. Its constitution mandates governance as a placeholder for a messianic figure who has been in hiding since the ninth century. Its Revolutionary Guard has been described by the Middle East Institute as increasingly influenced by millenarian narratives and Mahdist ideology that Western policymakers have often struggled to incorporate into strategic analysis.

And its history is punctuated by decisions that only make sense if national survival is not the highest priority: a war with Iraq fought for eight years with teenage volunteers wearing keys to paradise, a supreme leader who may have chosen not to evacuate when the bombs came, and the brutal crackdown on nationwide protests in January 2026 that killed an estimated 30,000 to 36,500 Iranians, mostly in just two days.

The officers who decide where the final missiles are aimed may not operate entirely under the conventional cost-benefit logic assumed by Western deterrence theory. In a system where ideological conviction and strategic desperation intersect, actions that appear irrational from the outside can become internally coherent. Meanwhile, while Trump and Netanyahu frame their strikes as a mission to “liberate” the Iranian people from a theocratic regime that massacred tens of thousands of its own citizens, Iran’s rhetoric remains the eradication of Israel and the killing of as many Jews as possible.

This war traces back to October 7, 2023, when Iran financed and enabled Hamas to massacre Israeli civilians in their homes and take hostages into Gaza, fully aware of the devastating Israeli response that would follow. Neither Hamas nor Iran showed concern for Palestinian civilians in Gaza, using inevitable collateral damage and guerrilla warfare casualties as propaganda to manipulate global opinion and isolate Israel.

If Iran shows no regard for Palestinian civilians, nor for its own Iranian citizens slaughtered in protests, it is unlikely to feel even a gram of empathy for Israel’s civilian population, viewed theologically as infidels from the extremist Shia perspective.

And in that logic, the contamination of the Holy Land is not simply a catastrophe. It is a provocation designed to trigger a response so devastating that it reshapes the strategic landscape of the region.

The consequences no one is calculating

A successful strike on Dimona would leave an uncertain and potentially catastrophic panorama for the entire Middle East. Radioactive contamination would not respect borders. Jordan, 25 kilometers away, would face immediate fallout risk. Egypt, the Gulf states, and the broader region would confront contaminated wind patterns, disrupted agriculture, and mass displacement on a scale for which no contingency plan exists.

And then comes the response. Israel, internationally documented as one of nine nuclear-armed states, would face a de facto radiological attack on its sovereign territory. The combined response from Israel and the United States, would be difficult to overstate and could be impossible to contain.

Adding kilotons and megatons is basic arithmetic, and the Persians were once pioneers in mathematics. Al-Khwarizmi fathered algebra, Omar Khayyam solved cubic equations centuries ahead of Europe. Yet today, that same heritage confronts a calculus where mutual annihilation seems acceptable.

Yes or no? The answer is yes: a tragic irony that a civilization renowned for advancing human knowledge now risks reducing it to the simplest, most destructive equation.

And if we dig deeper, such a scenario would not only bring devastating regional consequences, it could unleash global ones as well.

Yes. In one way or another, Iran already holds the nuclear weapon it is prepared to detonate, even if that triggers an unstoppable chain reaction with repercussions beyond imagination, provided Israel allows it.

© The Times of Israel (Blogs)