An Iranian nuclear facility is so deep underground that US airstrikes likely couldn’t reach it

May 22, 2023

Near a peak of the Zagros Mountains in central Iran, workers are building a nuclear facility so deep in the earth that it is likely beyond the range of a last-ditch U.S. weapon designed specifically for such sites

DUBAI, United Arab Emirates (AP) — Near a peak of the Zagros Mountains in central Iran, workers are building a nuclear facility so deep in the earth that it is likely beyond the range of a last-ditch U.S. weapon designed to destroy such sites, according to experts and satellite imagery analyzed by The Associated Press.

The photos and videos from Planet Labs PBC show Iran has been digging tunnels in the mountain near the Natanz nuclear site, which has come under repeated sabotage attacks amid Tehran’s standoff with the West over its atomic program.

With Iran now producing uranium close to weapons-grade levels after the collapse of its nuclear deal with world powers, the installation complicates the West’s efforts to halt Tehran from potentially developing an atomic bomb as diplomacy over its nuclear program remains stalled.

Completion of such a facility “would be a nightmare scenario that risks igniting a new escalatory spiral,” warned Kelsey Davenport, the director of nonproliferation policy at the Washington-based Arms Control Association. “Given how close Iran is to a bomb, it has very little room to ratchet up its program without tripping U.S. and Israeli red lines. So at this point, any further escalation increases the risk of conflict.”

The construction at the Natanz site comes five years after

then-President Donald Trump unilaterally withdrew America from the nuclear accord

. Trump argued the deal did not address Tehran’s ballistic missile program, nor its support of militias across the wider Middle East.

But what it did do was strictly limit Iran’s enrichment of uranium to 3.67% purity, powerful enough only to power civilian power stations, and keep its stockpile to just some 300 kilograms (660 pounds).

Since the demise of the nuclear accord, Iran has said it is enriching uranium up to 60%, though inspectors recently discovered the country had produced uranium particles that were 83.7% pure. That is just a short step from reaching the 90% threshold of weapons-grade uranium.

As of February, international inspectors estimated Iran’s stockpile was over 10 times what it was under the Obama-era deal,

with enough enriched uranium to allow Tehran to make “several” nuclear bombs

, according to the head of the International Atomic Energy Agency.

President Joe Biden and Israel’s prime minister have said they won’t allow Iran to build a nuclear weapon. “We believe diplomacy is the best way to achieve that goal, but the president has also been clear that we have not removed any option from the table,” the White House said in a statement to the AP.

The Islamic Republic denies it is seeking nuclear weapons,

though officials in Tehran now openly discuss their ability to pursue one

.

Iran’s mission to the United Nations, in response to questions from the AP regarding the construction, said that “Iran’s peaceful nuclear activities are transparent and under the International Atomic Energy Agency safeguards.” However, Iran has been limiting access for international inspectors for years.

Iran says the new construction

will replace an above-ground centrifuge manufacturing center

at Natanz struck by an explosion and fire in July 2020. Tehran blamed the incident on Israel, long suspected of running sabotage campaigns against its program.

Tehran has not acknowledged any other plans for the facility, though it would have to declare the site to the IAEA if they planned to introduce uranium into it. The Vienna-based IAEA did not respond to questions about the new underground facility.

The new project is being constructed next to Natanz, about 225 kilometers (140 miles) south of Tehran. Natanz has been a point of international concern since its existence became known two decades ago.

Protected by anti-aircraft batteries, fencing and Iran’s paramilitary Revolutionary Guard, the facility sprawls across 2.7 square kilometers (1 square mile) in the country’s arid Central Plateau.

Satellite photos taken in April by Planet Labs PBC and analyzed by the AP show Iran burrowing into the Kūh-e Kolang Gaz Lā, or “Pickaxe Mountain,” which is just beyond Natanz’s southern fencing.

A different set of images analyzed by the James Martin Center for Nonproliferation Studies reveals that four entrances have been dug into the mountainside, two to the east and another two to the west. Each is 6 meters (20 feet) wide and 8 meters (26 feet) tall.

The scale of the work can be measured in large dirt mounds, two to the west and one to the east. Based on the size of the spoil piles and other satellite data, experts at the center told AP that Iran is likely building a facility at a depth of between 80 meters (260 feet) and 100 meters (328 feet). The center’s analysis, which it provided exclusively to AP, is the first to estimate the tunnel system’s depth based on satellite imagery.

The Institute for Science and International Security, a Washington-based nonprofit long focused on Iran’s nuclear program, suggested last year the tunnels could go even deeper.

Experts say the size of the construction project indicates Iran likely would be able to use the underground facility to enrich uranium as well — not just to build centrifuges. Those tube-shaped centrifuges, arranged in large cascades of dozens of machines, rapidly spin uranium gas to enrich it. Additional cascades spinning would allow Iran to quickly enrich uranium under the mountain’s protection.

“So the depth of the facility is a concern because it would be much harder for us. It would be much harder to destroy using conventional weapons, such as like a typical bunker buster bomb,” said Steven De La Fuente, a research associate at the center who led the analysis of the tunnel work.

The new Natanz facility is likely to be even deeper underground than Iran’s Fordo facility,

another enrichment site that was exposed in 2009 by U.S. and other world leaders

. That facility sparked fears in the West that Iran was hardening its program from airstrikes.

Such underground facilities led the U.S. to create the GBU-57 bomb, which can plow through at least 60 meters (200 feet) of earth before detonating, according to the American military. U.S. officials reportedly have discussed using two such bombs in succession to ensure a site is destroyed. It is not clear that such a one-two punch would damage a facility as deep as the one at Natanz.

With such bombs potentially off the table, the U.S. and its allies are left with fewer options to target the site. If diplomacy fails, sabotage attacks may resume.

Already, Natanz has been targeted by the Stuxnet virus, believed to be an Israeli and American creation, which destroyed Iranian centrifuges.

Israel also is believed to have killed scientists involved in the program

, struck facilities with bomb-carrying drones and launched other attacks. Israel’s government declined to comment.

Experts say such disruptive actions may push Tehran even closer to the bomb — and put its program even deeper into the mountain where airstrikes, further sabotage and spies may not be able to reach it.

“Sabotage may roll back Iran’s nuclear program in the short-term, but it is not a viable, long-term strategy for guarding against a nuclear-armed Iran,” said Davenport, the nonproliferation expert. “Driving Iran’s nuclear program further underground increases the proliferation risk.”

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Follow Jon Gambrell on Twitter at www.twitter.com/jongambrellAP.

___

The Associated Press receives support for nuclear security coverage from

the Carnegie Corporation of New York

and

Outrider Foundation

. The AP is solely responsible for all content.

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The Supreme Court is poised to make taxpayers fund anti-LGBTQ discrimination

Oct 27, 2026

The Supreme Court is poised to make taxpayers fund anti-LGBTQ discrimination

On November 3, the Supreme Court will hear St. Mary Catholic Parrish v. Roy, which squarely presents the question of whether the Constitution authorizes discrimination by religious schools. | Kent Nishimura/Los Angeles Times via Getty Images For years, the Supreme Court has flirted with the question of whether religious conservatives may simply ignore laws prohibiting discrimination against LGBTQ Americans. The Court’s Republican majority frequently rules in favor of business owners and institutions that refuse to serve gay or trans people. But these cases often rely on ad hoc reasoning that seems designed to give religious conservatives a narrow win without resolving broader questions about whether people with anti-LGBTQ religious views have an absolute right to violate civil rights laws. On November 3, however, the Court will hear St. Mary Catholic Parrish v. Roy, which squarely presents the question of whether the Constitution authorizes discrimination by religious schools. Given the Court’s past behavior in similar cases, it’s hard to imagine St. Mary ending in anything other than a victory for religious groups that wish to exclude sexual or gender minorities. The case also presents another, related question: When does the Constitution require states to subsidize religious institutions? The Republican justices’ recent decisions suggest that they are eager to make taxpayers spend a great deal more money to promote religion. The case concerns a Colorado law that pays for preschool education for all 4-year-olds in the state. Families with eligible children may choose from a broad range of private and public schools, including religious schools. But the state also bars schools that participate in this program from discriminating on the basis of sexual orientation or gender identity. Religious preschools that discriminate may continue to operate in Colorado. Although Colorado does have a broad ban on anti-LGBTQ discrimination, that ban exempts places that are “principally used for religious purposes.” So the sole issue in St. Mary is whether Colorado’s taxpayers must fund religious schools that engage in discrimination. Until fairly recently, the question of whether a state would fund religious education was up to the state itself. In 2002, the Court ruled in Zelman v. Simmons-Harris that states had broad leeway to decide whether to fund religious education. They could, if they chose to, set up private school voucher programs that include religious schools. But they could also choose only to fund secular education. In Carson v. Makin (2022), however, the Supreme Court abandoned this permissive approach. The case struck down a Maine program that offered private school tuition vouchers to students in sparsely populated areas where it was not cost-efficient for the state to operate a public school. Maine law provided that these vouchers could only be used at “nonsectarian schools,” but the Court’s Republican majority held that school voucher programs must include religious schools. The Colorado preschool program at issue in St. Mary, in contrast to the program in Maine, does not bar any school from participating because it teaches religion or is affiliated with a particular faith. The program merely requires all participating schools — be they Catholic, protestant, Jewish, Muslim, Hindu, or secular — to comply with an anti-discrimination law. The question in St. Mary, in other words, is whether religious schools can not only demand taxpayer funding, but also demand exemptions from generally applicable rules that apply to all other schools that accept that funding — essentially requiring taxpayers to pay for institutions that discriminate. The St. Mary plaintiffs want the Supreme Court to join together separate lines of religion cases The Court’s Republican majority has spent more than a decade remaking how the Constitution approaches religion — or, at least, rewriting the Court’s own precedents interpreting the Constitution’s provisions governing religious rights. One of those provisions guarantees everyone the right to “free exercise” of their own faith, while the other prohibits the government from creating an “establishment of religion.” Broadly speaking, the Court’s recent decisions have read the first provision expansively, while simultaneously reducing limits on the government’s ability to advance religion — or even holding that the government is constitutionally required to fund religious institutions. The St. Mary plaintiffs ask the Court to marry two branches of its recent religion decisions — one of which governs when people who object to a law on religious grounds are exempt from following it; the other asks when the government must fund religious schools. The first branch involves the Constitution’s free exercise clause, and this Court has fairly consistently held that, when the interests of religious conservatives conflict with LGBTQ Americans — or, really, anyone who takes a relatively liberal approach to sexuality — religious conservatives win. If you are a religious conservative, and you want an exemption from a law barring discrimination against LGBTQ people, this Court will make up a reason why you should win.  That said, while this Court consistently favors religious conservatives over queer people, the Court’s cases governing when a person of faith is exempt from a law that they object to on religious grounds are fairly incoherent and have not articulated clear legal rules. In Employment Division v. Smith (1990), the Court held that these exemptions are not available when someone challenges a “neutral law of general applicability,” meaning that the law applies with equal force to both religious and non-religious people or institutions. But Smith is, to put it mildly, not a beloved decision. Congress tried, semi-successfully, to overrule it when it enacted the Religious Freedom Restoration Act of 1993. And the Court’s most recent religion cases often read like the justices are looking for an excuse not to follow Smith.  In Masterpiece Cakeshop v. Colorado Civil Rights Commission (2018), for example, the Court ruled in favor of a Christian baker who refused to bake wedding cakes for same-sex couples. But the Court grounded that decision in facts very specific to the case, and Masterpiece Cakeshop offers judges little guidance on how they should decide other religion cases that don’t involve these unusual facts. Similarly, in Fulton v. Philadelphia (2021), the Court dodged a showdown over whether to overrule Smith and again resolved the case based on facts that were unique to that case. These are just two examples of the Court finding ways to not follow the rule it laid out in Smith, without overruling Smith or otherwise announcing a broad legal rule that governs free exercise cases. In their brief to the justices, the St. Mary plaintiffs list “at least eight different categories of cases where Smith does not control.” It appears that the Court has kept Smith in this strange limbo state — neither overruled nor followed in many cases — because several of the justices aren’t sure what legal rule should exist in its place. Indeed, in a concurring opinion in Fulton, Justice Amy Coney Barrett said outright that, while there are “serious arguments that Smith ought to be overruled,” she wasn’t yet prepared to do so because she wasn’t sure “what should replace Smith.” Still, the one thing that is clear from this Court’s recent precedents is that religious conservatives routinely prevail over LGBTQ Americans. The current Court has not disturbed decisions from the 1980s that held that religious business owners must pay taxes and comply with workplace regulations such as the minimum wage, but it consistently comes up with a reason to permit religious conservatives to engage in anti-LGBTQ discrimination whenever that issue comes up. That’s bad news for same-sex couples in Colorado, and a sign that the St. Mary plaintiffs are likely to prevail. The current crop of justices appear to be either unable or unwilling to come up with a coherent legal doctrine that can guide judges hearing religious liberty cases. The second line of cases at issue in St. Mary, meanwhile, deal with government subsidies. Nearly a quarter century ago, the Supreme Court held that states may fund religious education if they choose, but that they aren’t required to do so. The Court’s current majority, by contrast, handed down a series of decisions suggesting that separation of church and state is itself unconstitutional. These decisions culminated in Carson, which held that states that offer vouchers to pay for private school tuition must allow these vouchers to be spent at religious schools. So, realistically, there’s little chance that the plaintiffs in St. Mary will not succeed. If you accept both Carson and the Court’s decisions elevating religious conservatives over LGBTQ people, then it’s not like these plaintiffs’ argument is much of a stretch. It is nothing more than the logical next step in the Court’s broader efforts to shield religious conservatives from anti-discrimination laws, while also requiring nonbelievers to fund those conservatives’ schools. Carson established that a state violates the Constitution’s free exercise clause when it denies a government subsidy to a religious school. Meanwhile, the Court’s cases involving religious exemptions to the law are doctrinally incoherent, but the one theme that does unite them is that religious conservatives should not have to follow laws protecting LGBTQ people from discrimination. It is likely, in other words, that Colorado taxpayers will soon be constitutionally required to fund schools that refuse to serve the children of same-sex couples — or that otherwise engage in anti-LGBTQ discrimination that violates Colorado law. The Court is likely to hand down another ad hoc decision that doesn’t explain how judges are supposed to approach religious liberty cases One additional w

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