Anthropic got hit by export rules nobody understands

The Trump administration invoked 'national security authorities' to cut off Anthropic's Fable 5 and Mythos 5 models from all foreign nationals — including users inside the US and Anthropic's own employees — without publicly explaining the legal basis. It's reportedly the first time US export controls have been used to restrict access to an AI model this way, and the move has rattled allied governments enough that some are now talking about building their own frontier AI alternatives. Whatever you think about AI policy, this is a genuinely new kind of precedent, and it's moving fast.