Pentagon Blocks Anthropic’s Claude AI Over Constitutional Policy Concerns

TLDR Pentagon officials stated that Claude AI’s constitutional framework contains policy preferences incompatible with defense operations. The Defense Department designated Anthropic as a supply chain threat, marking the first time an American tech firm received this classification. Pentagon vendors and contractors are now required to verify they’re not utilizing Claude for defense-related projects. The AI company filed litigation against the Trump administration on Monday, describing the designation as “unprecedented and unlawful” with hundreds of millions in contracts threatened. Palantir’s CEO Alex Karp revealed his firm continues deploying Claude for American military applications despite the prohibition. Earlier this month, the Defense Department took the historic step of labeling Anthropic a supply chain security concern, representing the first instance of an American enterprise receiving such a designation. Previously, this classification had been reserved exclusively for foreign threats. During a Thursday appearance on CNBC’s “Squawk Box,” Defense Department Chief Technology Officer Emil Michael defended the controversial decision. He pointed to Claude’s foundational “constitution” — Anthropic’s proprietary framework for governing AI behavior — as creating inherent policy biases that could undermine military applications. “We can’t have a company that has a different policy preference that is baked into the model through its constitution, its soul, its policy preferences, pollute the supply chain so our war fighters are getting ineffective weapons, ineffective body armor, ineffective protection,” Michael said. Anthhropic released the latest iteration of Claude’s constitutional document in January 2026. According to the company, this framework serves a “crucial role” in model development and “directly shapes Claude’s behavior.” The supply chain classification requires all defense industry partners and suppliers to confirm they’re excluding Claude from Pent...