Anthropic got hit by export rules nobody understands

Anthropic was forced to block access to its latest AI models, Fable 5 and Mythos 5, after the Trump administration abruptly ordered the company to cut access for foreign nationals, including users and employees in the US. The order, based on unclear national security authorities, marks the first time US export controls have been used to restrict access to an AI model in this way. The legal basis for the action remains unexplained by the administration.