The Pentagon Says Anthropic Is a National Security Risk — Because It Might Say No

March 19, 2026

The U.S. Department of War filed a 40-page opposition brief this week in Anthropic PBC v. U.S. Department of War, arguing that Anthropic's commitment to AI safety principles makes it an unacceptable supply chain risk for the military. The Pentagon's core concern: Anthropic could "attempt to disable its technology or preemptively alter the behavior of its model either before or during ongoing warfighting operations" if it felt its ethical red lines were being crossed.

Anthropic had sued earlier this month after federal agencies were directed to stop using Claude following the company's refusal to accept the government's standard "any lawful use" contract terms. The hearing is set for March 24 in San Francisco.

This is likely the first major legal battle where an AI company's safety commitments are being framed not as a feature, but as a threat.

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