Anthropic is suing the Trump administration for what it calls an "unlawful campaign of retaliation" over its refusal to allow unrestricted military use of its technology. The company has asked federal courts to reverse the Pentagon's decision to designate Anthropic as a "supp chain risk" and to undo President Donald Trump's order that federal employees stop using its AI chatbot Claude. The legal challenge comes amid a public dispute over the use of AI in warfare and mass surveillance. Anthropic's lawsuit also names other federal agencies, including the departments of Treasury and State.