The US government has mandated Anthropic to restrict access to its AI models, Fable and Mythos, for all foreign nationals, including non-citizen staff. This move is seen as part of a broader strategy to maintain control over advanced AI technologies, reminiscent of previous restrictions on semiconductor exports to China. The decision could lead to increased global tensions and a potential AI arms race as nations seek to develop their own capabilities. The restriction is expected to drive a divide between those with access to cutting-edge AI and those without, potentially accelerating the wealth gap. It may also fuel the growth of open-source AI models as countries and companies look for alternatives. The geopolitical implications are significant, with countries like China potentially benefiting from the US's restrictive policies, as they may attract nations seeking AI partnerships outside of US influence.