US Forces Anthropic to Disable Top AI Models in Historic Act
The United States government has forced AI company Anthropic to disable its two most advanced artificial intelligence models — Claude Fable 5 and Claude Mythos 5 — for all users globally, after issuing an export control directive barring access by any foreign national. The move, which Anthropic described as based on a “potential narrow, non-universal jailbreak,” has prompted European leaders and analysts to call it a wake-up call for Europe’s technological sovereignty.
An Unprecedented Directive
On the evening of Friday, June 12, 2026, the US Department of Commerce issued an export control directive to Anthropic, citing national security authorities. The order required the company to suspend all access to Fable 5 and Mythos 5 by any foreign national — whether inside or outside the United States, including foreign national Anthropic employees.
Because Anthropic says it cannot technically distinguish foreign from domestic users in real time, the company was forced to disable the models for all customers globally, including US citizens and its own employees. The New York Times described the order as “unusually expansive.”
“That a government dictates who may use AI, there is no precedent for that to my knowledge,” said Tom Van de Weghe, AI expert at Belgian public broadcaster VRT NWS, as reported by VRT NWS. “Export controls on software have existed since the 90s, first for encryption, later for hacking tools. But a government dictating who may use AI, including a company’s own employees with a Canadian or British passport — there is no precedent for that.”
The Models at the Center of the Dispute
Fable 5 and Mythos 5 were launched just three days before the directive, on June 9, 2026. According to Anthropic’s launch announcement, Fable 5’s “capabilities exceed those of any model we’ve ever made generally available,” showing state-of-the-art performance in software engineering, knowledge work, vision, and scientific research. Fable 5 is a “Mythos-class” model made safe for general public use with safeguards that fall back to Opus 4.8 on high-risk queries. Mythos 5 is the same underlying model with safeguards lifted for vetted cybersecurity partners through Project Glasswing.
A Growing Rift with Washington
The export control directive marks the second major action by the Trump administration against Anthropic in just a few months. Earlier in 2026, Anthropic’s relationship with the US government broke down after the company refused to allow military use of its AI models for domestic surveillance and fully autonomous weapons systems. The Pentagon subsequently added Anthropic to a supply chain blacklist, as reported by DW.
Anthropic Disputes the Government’s Evidence
Anthropic has complied with the directive but strongly disputes the basis for it. In its official statement, the company said the government has only provided “verbal evidence of a potential narrow, non-universal jailbreak” that identifies previously known, minor vulnerabilities that other publicly-available models — including OpenAI’s GPT-5.5 — can also discover.
“We disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people,” Anthropic stated. “If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers.”
The company added: “We believe the government should have the ability to block unsafe deployments, as part of a statutory process that is transparent, fair, clear, and grounded in technical facts. This action does not adhere to those principles.”
A Wake-Up Call for Europe
The implications for Europe are profound. European businesses and governments largely build their AI applications on American foundation models, and this event demonstrates that access can be cut off overnight by a single US government order.
“For Europe this is a wake-up call,” Van de Weghe told VRT NWS. “Our dependence on the most advanced American models is now painfully visible: one order from Washington can cut off access to the best systems overnight. That directly affects our competitive position and our digital autonomy.”
The timing is particularly striking. Just ten days before this news broke, on June 3, 2026, the European Commission presented its Tech Sovereignty Package, which includes the Chips Act 2.0 to strengthen European semiconductor capabilities, the Cloud and AI Development Act (CADA) to boost European cloud and AI infrastructure, and measures to promote open-source alternatives, as detailed by JDSupra.
The Anthropic export control directive dramatically underscores the urgency of these measures. It is the first concrete example of the US government unilaterally cutting off European access to frontier AI systems — a scenario that European leaders have long warned about but that many considered hypothetical until now.
A Precedent with Global Consequences
Until this point, US export controls have mainly targeted AI chips and hardware — such as NVIDIA GPU restrictions to China — rather than limiting foreign access to the AI models themselves. This directive represents a significant escalation, treating frontier AI models as controlled munitions-like technology.
The move accelerates the trend toward a fragmented global technology landscape, sometimes described as a “Digital Iron Curtain,” where AI capabilities are divided along geopolitical lines, as noted by The AI Chronicle. If the US government applies this standard to other AI companies — OpenAI, Google DeepMind, and others — it could reshape the entire industry.
IPO Implications and Investor Uncertainty
The block also threatens Anthropic’s plans for an Initial Public Offering (IPO), potentially as early as fall 2026 at a valuation approaching $1 trillion. The Associated Press reported that the ban raises fresh questions among investors about regulatory risks and the company’s ability to maintain its technological edge.
What Comes Next
Anthropic has apologized for the disruption and said it is working to restore access “as soon as possible,” calling the situation a “misunderstanding.” However, with the Pentagon blacklist set to take effect later in 2026 and the company’s relationship with the Trump administration at a low point, the path forward remains uncertain.
Several key questions remain unanswered: What specific jailbreak method did the US government identify? How long will the models remain disabled? Will this precedent be applied to other AI companies? And perhaps most importantly for Europe — will the EU accelerate its Tech Sovereignty Package and invest more heavily in domestic AI alternatives?
Earlier in 2026, German politicians suggested that Germany should offer to host Anthropic after the Pentagon blacklist. This latest export control action may strengthen that case considerably. For now, the world is watching as the first major confrontation between a government and an AI company over access to frontier models unfolds — with consequences that will likely reverberate for years to come.