Dod Says Anthropic’s ‘red Lines’ Make It An ‘unacceptable Risk To National Security’

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In Brief

Posted:

6:40 AM PDT · March 18, 2026

Image Credits:Getty Images
  • Rebecca Bellan

The U.S. Department of Defense said connected Tuesday evening that Anthropic poses an “unacceptable consequence to nationalist security,” marking nan agency’s first rebuttal to the AI lab’s lawsuits challenging Defense Secretary Pete Hegseth’s determination past period to label nan institution a proviso concatenation risk. As portion of its complaints, Anthropic had requested nan tribunal temporarily artifact nan DOD from enforcing its label.

The crux of nan DOD’s argument, made successful a 40-page filing successful a California national court, is nan interest that Anthropic mightiness “attempt to disable its exertion aliases preemptively change nan behaviour of its model” earlier aliases during “warfighting operations” if nan institution “feels that its firm ‘red lines’ are being crossed.”

Anthropic past summertime signed a $200 cardinal statement pinch nan Pentagon to deploy its exertion wrong classified systems. In later negotiations complete nan position of nan contract, Anthropic said it did not want its AI systems to beryllium utilized for wide surveillance of Americans, and that nan exertion wasn’t fresh for usage successful targeting aliases firing decisions of lethal weapons. The Pentagon contested that a backstage institution shouldn’t dictate really nan subject uses technology.

Many organizations person spoken retired against nan DOD’s curen of Anthropic, arguing that nan section could person conscionable ended its contract. Several tech companies and labor — including from OpenAI, Google, and Microsoft — arsenic good arsenic ineligible authorities groups person revenge amicus briefs successful support of Anthropic. 

In its lawsuits, Anthropic accused nan DOD of infringing connected its First Amendment authorities and punishing nan institution based connected ideological grounds.  

A proceeding connected Anthropic’s petition for a preliminary injunction is group for adjacent Tuesday.

Anthropic did not instantly respond to a petition for comment.

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