Anthropic: There is insufficient legal basis to designate it as a national security supply chain risk.

On March 5, Anthropic CEO Dario Amodei issued a statement saying that Anthropic received a formal letter from the U.S. Department of Defense (now known as the War Department) on March 4, confirming that the company had been identified as a national security supply chain risk. Amodei stated that this designation lacks sufficient legal basis and the company will challenge it through legal channels. Amodei pointed out that the wording of the Department of Defense letter indicates that the designation only applies to situations where customers directly use Claude in Department of Defense contracts and does not affect Claude usage scenarios unrelated to Department of Defense contracts. He reiterated that Anthropic's negotiations with the Department of Defense have been ongoing, and both sides have communicated on service methods and transition plans. Anthropic maintains two bottom lines: opposition to large-scale domestic surveillance and fully autonomous weapons. Amodei apologized for a previously leaked internal company post, stating that the post was written on the same day that Trump announced the removal of Anthropic, Secretary of Defense Hegseth issued the supply chain risk designation, and OpenAI reached an agreement with the Pentagon, and that the tone was not fully considered. He stated that Anthropic's top priority is ensuring that frontline warfighters and national security experts do not lose critical tools during major operations, and the company will continue to provide model services to the Department of Defense and national security agencies at a nominal fee.