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The Iranian regime’s retention of key nuclear weapons facilities and its material for building atomic bombs — highly enriched uranium — has led to new efforts by the U.S. and Israeli militaries to take out the last vestiges of the regime’s program.

On Friday, the Israel Defense Forces (IDF) said in a statement that, that it’s «Air Force Struck the Arak Heavy Water Plant—A Key Plutonium Production Site for Nuclear Weapons.» The Arak plant is located in central Iran.

Prior to Friday’s attack, an IDF spokesperson told Fox News Digital concerning Arak, that there is a «high estimation» that attacks on «uranium enrichment sites are part of the plan.» The IDF declined to answer more specific questions about its target list and if any ground operations to retrieve the nuclear weapons-grade uranium were being considered.

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Reuters, quoting regime media outlet Fars, reported that joint U.S.-Israeli strikes on Friday hit the Khondab heavy water research reactor. 

A statement released by the IDF said, «Heavy water is a unique material used to operate nuclear reactors, such as the inactive Arak reactor, which was originally designed to have weapons-grade plutonium production capabilities. These materials can also be used as a neutron source for nuclear weapons.»

The IDF statement added that «The plant was a significant economic asset for the terror regime and served as a source of income for the Iranian Atomic Energy Organization, generating tens of millions of dollars for the regime each year.»

The regime’s foreign minister posted a condemnation of Israel and warned the Jewish state, «Iran will exact HEAVY price for Israeli crimes.»

According to an article published by the Washington, D.C.-based Institute for Science and International Security (ISIS), «The IR-40 Arak, aka Khondab, Heavy Water Reactor and Heavy Water Production Plant date to the early 2000s… The reactor core design was ideal for making substantial amounts of weapon-grade plutonium for nuclear weapons.»

STRIKES MAY SET IRAN BACK — BUT LIKELY WON’T END NUCLEAR PROGRAM, UN WATCHDOG CHIEF SAYS

Jason Brodsky, the policy director of United Against Nuclear Iran (UANI), told Fox News Digital, «The one nuclear site which hasn’t been hit to date has been Pickaxe Mountain, so striking that site as part of Operation Epic Fury will be important to further degrade the Iranian nuclear program.»

A White House spokesperson referred Fox News Digital to President Trump’s cabinet meeting comments about Iran’s nuclear weapons program. Trump said on Thursday, «We’re free to roam over their cities and towns and destroy all of their crazy nuclear weapons and missiles and drones that they’re building.»

A map shows damage to Iran’s Fordow nuclear site after being struck by the United States in Operation Midnight Hammer on June 22, 2025. (Fox News)

David Albright, a physicist, founder and president of the Institute for Science and International Security told Fox News Digital that with respect to key nuclear weapons facilities that remain, «The elephants in the tent are Natanz and Isfahan. There was an attack on Natanz that the Iranians revealed, but the Israelis said we are not aware of an attack. So it must have been the U.S.,» he claimed.

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He said that Natanz has enriched uranium. «The Iranians were doing recovery operations in the underground fuel enrichment plant there and continuing to build this pickaxe mountain tunnel complex, which could hold enriched uranium. Right next to it is another tunnel complex that was built much earlier, around 2007… And the Iranians sealed it up, fortified it. There is something obviously important there.»

Albright said U.S. and Israeli airstrikes «have not attacked the underground Isfahan site. We know, according to the IAEA [International Atomic Energy Agency], highly enriched uranium is in that site.» He continued that, «There may be an enrichment plant under construction in that underground complex. We would like that site to be attacked.»

Iranian worshippers hold up their hands as signs of unity with Iran’s Supreme Leader, Ayatollah Ali Khamenei, during an anti-Israeli rally to condemn Israel’s attacks on Iran, in downtown Tehran, Iran, on June 20, 2025.  (Morteza Nikoubazl/NurPhoto via Getty Images)

Albright warned that the war should not end like the previous U.S.-Israel war with Iran in 2025 with Tehran retaining the «crown jewels» of its atomic weapons program: highly enriched uranium and a number of centrifuges.

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He warned, «You don’t want it to come out of this war with the same kind of nuclear weapons capabilities that it had at the end of June war with a higher incentive to build a bomb.» He added, that is why it’s so important ‘to finish the job,» in Iran. 

A federal judge’s decision to block the Trump administration from banning AI firm Anthropic from Department of War use is igniting a debate over whether the ruling pushes courts into national security decision-making.

The ruling, issued late Thursday by U.S. District Judge Rita Lin, a Biden appointee to the Northern District of California, pauses the administration’s broader effort to bar the company while the case proceeds, though it does not explicitly require the Pentagon to use Anthropic. The judge also gave the government one week to appeal.

Under Secretary of War Emil Michael wrote on X that the ruling contained «dozens of factual errors» and was issued «during a time of conflict,» arguing it «seeks to upend the (president’s) role as Commander in Chief» and disrupt the department’s ability to conduct military operations.

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Michael said the administration views Anthropic as still designated a supply chain risk pending appeal, signaling officials are disputing the scope and effect of the court’s injunction.

Lin said the Pentagon’s move to designate Anthropic as a national security risk was «likely both contrary to law and arbitrary and capricious.»

«Nothing in the governing statute supports the Orwellian notion that an American company may be branded a potential adversary and saboteur of the U.S. for expressing disagreement with the government,» Lin said.

«Can a judge order the Department of War to use a vendor that is a security risk? No, but also yes? Judge Lin (Biden N.D. California) tries to stop President Trump/Secretary Hegseth from banning Anthropic. But acknowledges they can choose not to use it?» one X user Eric Wess wrote on the social media platform. 

War Secretary Pete Hegseth had warned Anthropic it would face termination of its $200 million contract or be designated a supply chain risk if it did not allow its AI platform to be approved for all lawful uses.  (Joe Raedle/Getty Images)

Others described the ruling as «pure judicial activism» and accused the judge of interfering in a national security decision.

But supporters of the decision — including a bipartisan group of nearly 150 retired federal and state judges — say the administration overstepped, warning the Pentagon’s use of a «supply chain risk» designation appeared improperly applied and could chill free speech and legitimate business activity.

In a March 3 letter, the Pentagon had notified Anthropic it would be designated a supply chain risk to national security. That designation ordered that no contractor, supplier or partner doing business with the United States military may conduct commercial activity with Anthropic.

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The legal fight follows a broader dispute between the Pentagon and Anthropic over how the company’s AI system, Claude, can be used in military operations. Claude is the only commercial AI system approved for classified use. 

War Secretary Pete Hegseth had warned Anthropic it would face termination of its $200 million contract, awarded in July 2025, or be designated a supply chain risk if it did not allow its AI platform to be approved for all lawful uses. 

Anthropic insisted it would not allow Claude to be used for fully autonomous weapons or mass surveillance of Americans. 

Pentagon officials say such uses already are not permitted, emphasizing that humans remain in the loop for lethal decisions and that the military does not conduct domestic surveillance, but maintain that private companies cannot dictate how their systems are used in lawful operations.

Lin pointed to the breadth of the measures — including a government-wide ban and contractor restrictions — saying they did not appear «tailored to the stated national security concern» and instead «look(ed) like an attempt to cripple Anthropic.

Hegseth described CEO Dario Amodei and Anthropic of a «master class in arrogance» and a «textbook case of how not to do business with the United States Government.» (Samyukta Lakshmi/Bloomberg via Getty Images)

Anthropic welcomed the decision, saying in a statement: «We’re grateful to the court for moving swiftly, and pleased they agree Anthropic is likely to succeed on the merits.»

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Hegseth described CEO Dario Amodei and Anthropic of a «master class in arrogance» and a «textbook case of how not to do business with the United States Government» in a Feb. 27 post on X. 

OpenAI has emerged as a key alternative, securing a Pentagon deal to deploy its models on classified systems as tensions with Anthropic escalated. 

Still, Anthropic has not been fully displaced — its Claude system remains deeply embedded in military workflows, and replacing it would take time.