Anthropic submitted two sworn declarations to a California federal court late Friday afternoon, pushing back on the Pentagon’s assertion that the AI company poses an “unacceptable risk to national security” and arguing that the government’s case relies on technical misunderstandings and claims that were never actually raised during the months of negotiations that preceded the dispute.
The declarations were filed alongside Anthropic’s reply brief in its lawsuit against the Department of Defense and come ahead of a hearing this coming Tuesday, March 24, before Judge Rita Lin in San Francisco.
The dispute traces back to late February, when President Trump and Defense Secretary Pete Hegseth publicly declared they were cutting ties with Anthropic after the company refused to allow unrestricted military use of its AI technology.
The two people who submitted the declarations are Sarah Heck, Anthropic’s Head of Policy, and Thiyagu Ramasamy, the company’s Head of Public Sector.
Heck is a former National Security Council official who worked at the White House under the Obama administration before moving to Stripe and then Anthropic, where she runs the company’s government relationships and policy work. She was personally present at the February 24 meeting where CEO Dario Amodei sat down with Defense Secretary Hegseth and the Pentagon’s Under Secretary Emil Michael.
In her declaration, Heck calls out what she describes as a central falsehood in the government’s filings: that Anthropic demanded some kind of approval role over military operations. That claim, she says, simply isn’t true. “At no time during Anthropic’s negotiations with the Department did I or any other Anthropic employee state that the company wanted that kind of role,” she wrote.
She also claims that the Pentagon’s concern about Anthropic potentially disabling or altering its technology mid-operation was never raised during negotiations. Instead, she says, it appeared for the first time in the government’s court filings, which gave Anthropic no opportunity to respond.
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Another detail in Heck’s declaration sure to draw attention is that on March 4 — the day after the Pentagon formally finalized its supply-chain risk designation against Anthropic — Under Secretary Michael emailed Amodei to say the two sides were “very close” on the two issues the government now cites as evidence that Anthropic is a national security threat: its positions on autonomous weapons and mass surveillance of Americans.
The email, which Heck attaches as an exhibit to her declaration, is worth reading alongside what Michael said publicly in the days afterward. On March 5, Amodei published a statement saying the company had been having “productive conversations” with the Pentagon. The day after that, Michael posted on X that “there is no active Department of War negotiation with Anthropic.” A week after that, he told CNBC there was “no chance” of renewed talks.
Heck’s point appears to be: If Anthropic’s stance on those two issues is what makes it a national security threat, why was the Pentagon’s own official saying the two sides were nearly aligned on exactly those issues right after the designation was finalized? (She stops short of saying the government used the designation as a bargaining chip, but the timeline she lays out leaves the question hanging.)
Ramasamy brings a different kind of expertise to the case. Before joining Anthropic in 2025, he spent six years at Amazon Web Services managing AI deployments for government customers, including classified environments. At Anthropic, he’s credited with building the team that brought its Claude models into national security and defense settings, including the $200 million contract with the Pentagon announced last summer.
His declaration takes on the government’s claim that Anthropic could theoretically interfere with military operations by disabling the technology or otherwise altering how it behaves, which Ramasamy says isn’t technically possible. Per his telling, once Claude is deployed inside a government-secured, “air-gapped” system operated by a third-party contractor, Anthropic has no access to it; there is no remote kill switch, no backdoor, and no mechanism to push unauthorized updates. Any kind of “operational veto” is a fiction, he suggests, explaining that a change to the model would require the Pentagon’s explicit approval and action to install.
Anthropic, he says, can’t even see what government users are typing into the system, let alone extract that data.
Ramasamy also disputes the government’s claim that Anthropic’s hiring of foreign nationals makes the company a security risk. He notes that Anthropic employees have undergone U.S. government security clearance vetting — the same background check process required for access to classified information — adding in his declaration that “to my knowledge,” Anthropic is the only AI company where cleared personnel actually built the AI models designed to run in classified environments.
Anthropic’s lawsuit argues that the supply-chain risk designation — the first ever applied to an American company — amounts to government retaliation for the company’s publicly stated views on AI safety, in violation of the First Amendment.
The government, in a 40-page filing earlier this week, rejected that framing entirely, saying that Anthropic’s refusal to allow all lawful military uses of its technology was a business decision, not protected speech, and that the designation was a straightforward national security call and not punishment for the company’s views.
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![Scientists Say Some Black Holes Are Born From Other Black Holes
Since LIGO’s Nobel-winning discovery of gravitational waves—ripples in spacetime—the U.S.-based detector has been picking up on hundreds of signals from black hole mergers. And, after a decade of studying gravitational waves, researchers believe a significant fraction of black holes may come from cosmic chain reactions. A recent paper published in Physical Review Letters describes an analysis of 155 pairs of binary black holes, identified by LIGO and its sisters, Virgo and KAGRA, in Italy and Japan, respectively. According to the study, about 14% of merging black holes may be what’s called “second-generation black holes,” or black holes that form from previous mergers of two smaller black holes. This “hierarchical” backstory is vastly different from the textbook version of how black holes emerge from the explosive death of a star. “Overall in the universe, black holes are merging all the time,” Cailin Plunkett, the study’s first author and a graduate student at the Massachusetts Institute of Technology, told MIT News. “Now we’re seeing a relatively consistent picture where there’s a decent percentage of black holes that are coming from this repeated pathway.”
Tracking the invisible Gravitational waves that reach Earth’s detectors typically come from extremely intense events. Over the years, LIGO has picked up some truly perplexing signals. For example, last summer it found the most colossal black hole merger ever—and if that wasn’t wild enough, the black holes that took part in the merger lie within a cosmic “dead zone” for black holes.
This zone refers to a range of black hole masses in which, physically speaking, black holes can’t form through ordinary stellar collapse. From these discoveries, astronomers realized just how little we knew about black holes, which are challenging to investigate directly. In that sense, it was a no-brainer that the ever-growing catalog of LIGO’s gravitational signals would turn up entirely new insights about black holes. “It is increasingly clear, both from individual events and population analyses, that massive black holes exist in [this] range,” the researchers wrote in the latest paper. “These observations have spurred further investigation into mechanisms that can populate this gap.”
A wobbly imprint The latest research represents one such investigation. During mergers, the two black holes spiral toward each other along an orbital plane. When one or both black hole spins are misaligned, the orbital plane can wobble, or “precess,” the researchers explained to MIT News. The degree to which the disk wobbles acts as a parameter from which researchers can measure the masses and spins of the merging black holes. One telling sign of hierarchical mergers is that they’re “lopsided,” meaning one of the pair has a much higher spin and mass than the other. For the study, the team created an analytic model to capture the kind of wobble that would have emerged from second-generation black holes. Around 14% of merging black holes followed this pattern, and the second-generation black holes identified had a very specific range of masses, at around 20 solar masses or 40 solar masses and above. Of mysterious origins To be fair, that might not sound like a whole lot. But it demonstrates that a sizeable portion of known black holes indeed follow this pattern. As for why, the team suspects hierarchical mergers emerge from dense stellar environments. Simply, when multiple neighboring stars die and collapse into black holes, the dense environment can make it easier for those black holes to find each other and merge. That could further lead to the formation of second-generation black holes. Theoretically, this could “repeat potentially ad infinitum, by virtue of the fact that you have a ton of stars and black holes in this really dense environment,” Plunkett said.
But an ensuing mystery concerns those black holes in the 40-and-above regime, which coincides with the aforementioned “death zones” for black hole masses. According to stellar evolution theory, black holes born of supernovas shouldn’t leave any black holes above roughly 45 solar masses, explained Plunkett. “Yet we have seen black holes that are that massive,” she mused. “And the question is: Where did they come from?” For now, it’s hard to say when we’ll get an answer to that question, if ever. But one thing seems to be clear: black holes are a lot weirder than we could ever imagine. #Scientists #Black #Holes #Born #Black #HolesBlack holes,Gravitational wave,LIGO Scientists Say Some Black Holes Are Born From Other Black Holes
Since LIGO’s Nobel-winning discovery of gravitational waves—ripples in spacetime—the U.S.-based detector has been picking up on hundreds of signals from black hole mergers. And, after a decade of studying gravitational waves, researchers believe a significant fraction of black holes may come from cosmic chain reactions. A recent paper published in Physical Review Letters describes an analysis of 155 pairs of binary black holes, identified by LIGO and its sisters, Virgo and KAGRA, in Italy and Japan, respectively. According to the study, about 14% of merging black holes may be what’s called “second-generation black holes,” or black holes that form from previous mergers of two smaller black holes. This “hierarchical” backstory is vastly different from the textbook version of how black holes emerge from the explosive death of a star. “Overall in the universe, black holes are merging all the time,” Cailin Plunkett, the study’s first author and a graduate student at the Massachusetts Institute of Technology, told MIT News. “Now we’re seeing a relatively consistent picture where there’s a decent percentage of black holes that are coming from this repeated pathway.”
Tracking the invisible Gravitational waves that reach Earth’s detectors typically come from extremely intense events. Over the years, LIGO has picked up some truly perplexing signals. For example, last summer it found the most colossal black hole merger ever—and if that wasn’t wild enough, the black holes that took part in the merger lie within a cosmic “dead zone” for black holes.
This zone refers to a range of black hole masses in which, physically speaking, black holes can’t form through ordinary stellar collapse. From these discoveries, astronomers realized just how little we knew about black holes, which are challenging to investigate directly. In that sense, it was a no-brainer that the ever-growing catalog of LIGO’s gravitational signals would turn up entirely new insights about black holes. “It is increasingly clear, both from individual events and population analyses, that massive black holes exist in [this] range,” the researchers wrote in the latest paper. “These observations have spurred further investigation into mechanisms that can populate this gap.”
A wobbly imprint The latest research represents one such investigation. During mergers, the two black holes spiral toward each other along an orbital plane. When one or both black hole spins are misaligned, the orbital plane can wobble, or “precess,” the researchers explained to MIT News. The degree to which the disk wobbles acts as a parameter from which researchers can measure the masses and spins of the merging black holes. One telling sign of hierarchical mergers is that they’re “lopsided,” meaning one of the pair has a much higher spin and mass than the other. For the study, the team created an analytic model to capture the kind of wobble that would have emerged from second-generation black holes. Around 14% of merging black holes followed this pattern, and the second-generation black holes identified had a very specific range of masses, at around 20 solar masses or 40 solar masses and above. Of mysterious origins To be fair, that might not sound like a whole lot. But it demonstrates that a sizeable portion of known black holes indeed follow this pattern. As for why, the team suspects hierarchical mergers emerge from dense stellar environments. Simply, when multiple neighboring stars die and collapse into black holes, the dense environment can make it easier for those black holes to find each other and merge. That could further lead to the formation of second-generation black holes. Theoretically, this could “repeat potentially ad infinitum, by virtue of the fact that you have a ton of stars and black holes in this really dense environment,” Plunkett said.
But an ensuing mystery concerns those black holes in the 40-and-above regime, which coincides with the aforementioned “death zones” for black hole masses. According to stellar evolution theory, black holes born of supernovas shouldn’t leave any black holes above roughly 45 solar masses, explained Plunkett. “Yet we have seen black holes that are that massive,” she mused. “And the question is: Where did they come from?” For now, it’s hard to say when we’ll get an answer to that question, if ever. But one thing seems to be clear: black holes are a lot weirder than we could ever imagine. #Scientists #Black #Holes #Born #Black #HolesBlack holes,Gravitational wave,LIGO](https://gizmodo.com/app/uploads/2026/07/black-hole-hierarchial-mergers-1280x853.jpg)
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