President Trump’s team just told one of America’s leading AI companies that some of its most powerful models are too sensitive to leave open to foreign access.

On June 12, 2026, Anthropic announced that the U.S. government, citing national security authorities, issued an export-control directive suspending foreign-national access to its Fable 5 and Mythos 5 models.

The directive applied whether the foreign national was inside or outside the United States. It even covered Anthropic’s own foreign-national employees.

The practical effect was blunt. Anthropic said it had to shut down both models for every customer to stay in compliance.

This is one of the clearest signals yet that President Trump’s team treats frontier AI as a strategic asset, not a consumer toy.

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The administration decided the technology was too valuable to leave unguarded, and it acted.

Anthropic laid out the directive in its own public statement:

The US government, citing national security authorities, has issued an export control directive 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.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Anthropic models will not be affected.

We received the directive from the government today at 5:21pm (ET). The letter did not provide specific details of its national security concern.

Our understanding is that the government believes it has become aware of a method of bypassing, or “jailbreaking” Fable 5.

We reviewed a demonstration of this specific technique being used to identify a small number of previously known, minor vulnerabilities.

These vulnerabilities all appear relatively simple, and we have found that other publicly-available models are able to discover them as well without requiring a bypass.

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We have instituted strong safeguards that greatly reduce the likelihood that Fable is misused for tasks related to cybersecurity (among others).

In the weeks leading up to the launch of Fable, Anthropic worked with the US government, the UK AISI, multiple private third-party organizations and internal teams to red-team Fable’s safeguards for thousands of hours in total.

These tests showed that Fable’s safeguards are substantially more effective than those of any previously deployed model.

No testers have yet been able to find a universal jailbreak—a jailbreak method that can very broadly bypass the model’s safeguards, unblocking a wide range of cyber capabilities.

Anthropic does not think the shutdown was necessary.

The company said the jailbreak technique it reviewed surfaced only a few minor, previously known vulnerabilities that other public models can find on their own.

Anthropic is challenging the government’s reasoning. The directive still forced an immediate shutdown.

Outside the company, tech leaders immediately understood the broader signal: advanced AI is now a sovereignty and national-security issue.

Axios reported that Commerce Secretary Howard Lutnick sent the letter to Anthropic CEO Dario Amodei.

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According to Axios, the letter said Mythos 5 and Fable 5 would be subject to export controls outside the United States and to foreign persons inside the country.

Axios also reported that an administration official said the models need to remain locked down until the U.S. government’s national-security apparatus is hardened.

Reporter Andrew Curran summarized the Commerce-letter piece this way:

This move fits the posture President Trump set down weeks earlier.

His June 2, 2026 AI executive order framed advanced models as both a national strength and a national-security problem that demands coordinated action.

The White House order stated:

Advanced AI capabilities make our Nation stronger, but also introduce new national security considerations that require coordinated action across executive departments and agencies (agencies), and components.

As these capabilities evolve, my Administration will continue to work closely with industry to ensure that the best and most secure technology is deployed rapidly to confront any and all threats to our country.

We will continue to lead an America First cybersecurity effort that enhances both our national security and our global AI dominance.

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It is the policy of the United States to promote AI innovation and security by working collaboratively with the private sector to modernize government and private sector information systems and harden them against external threats; to protect American ingenuity and intellectual property from exploitation and theft by adversaries; and to cultivate America’s advanced AI-enabled capabilities.

Within 60 days of the date of this order, the Secretary of the Treasury, the Secretary of War, through the Director of NSA, and the Secretary of Homeland Security, through the Director of CISA, in consultation with the White House Chief of Staff, through the National Cyber Director, the Assistant to the President for Science and Technology (APST), and the Secretary of Commerce, through the Director of the National Institute of Standards and Technology, and in coordination with other agencies, as appropriate, shall:

(a) develop and maintain a classified benchmarking process to assess the advanced cyber capabilities of AI models and determine the threshold at which an AI model should be designated a “covered frontier model” for the purposes of this order, sharing such assessments with AI developers and researchers as appropriate.

Fable 5 and Mythos 5 just became a real-world test case for that policy.

America builds the most advanced AI on earth, and the Trump administration is now making clear that foreign access can run into national-security limits.

The AI race is no longer only about who builds the smartest tool. It is also about who controls it once the tool becomes powerful enough to matter strategically.

This is a Guest Post from our friends over at WLTReport. View the original article here.

 

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