President Donald Trump has ordered all federal agencies to immediately cease using Anthropic's AI tools, following a dispute with the Defense Department over military applications of artificial intelligence. Anthropic resisted demands to remove restrictions on its AI's use for lethal autonomous weapons and mass surveillance, citing ethical concerns. Defense Secretary Pete Hegseth designated Anthropic a "supply chain risk," effectively barring the US military and its contractors from working with the company. This move highlights a growing tension between Silicon Valley's ethical AI development and government demands for unrestricted military use, with other major AI labs like OpenAI and Google also expressing similar reservations.