The news is full of how an ignominious peace deal with Iran exemplifies a decline in American power. That conclusion could hardly be more wrong. On June 12th the Trump administration ordered Anthropic to block foreigners from Fable and Mythos, its latest and most capable frontier AI models. In an instant, everyone learned that the American government can decide who may use the world’s most important technology. You don’t get much more powerful than that.

The administration was responding to a supposed jailbreak for Fable, meaning a prompt that circumvents defences against uses such as hacking computers or making bioweapons. The chances are that it wanted Anthropic to switch off the models for everyone, and that targeting foreigners was a means to an end. Sure enough, that is what Anthropic did, while claiming that the concern about its model was overblown. The legal basis of the order remains unclear, and the ban seems unlikely to last.

De redactie van NRC selecteert de beste artikelen uit The Economist voor een breder perspectief op internationale politiek en economie.

What matters, though, is the demonstration that global access to the best AI may come down to a decision in the Oval Office. The administration showed in March that it is prepared to trample on the frontier AI companies, when it designated Anthropic a „supply-chain risk”. Now it has shown that it is prepared to trample on users, too.