US President Donald Trump has said he would direct every federal agency to immediately stop using technology from AI developer Anthropic. "We don't need it, we don't want it, and will not do business with them again!" Trump wrote in a Truth Social post on Friday. Anthropic is mired in a row with the White House after refusing demands that it agree to give the US military unfettered access to its AI tools. The refusal led US Defence Secretary Pete Hegseth to say he's deemed Anthropic a "supply chain risk". The label would make Anthropic the first US company to ever publicly receive such treatment. The company said that it "will challenge any supply chain risk designation in court".