Why the U.S. Defense Department blacklist of Anthropic is so unprecedented

The Pentagon has made the unprecedented move of designating Anthropic as a supply chain risk, threatening the $380 billion company's enterprise business ahead of a planned IPO. CEO Dario Amodei vows to fight the designation in court, even as the U.S. military continues using Anthropic's tools in active operations against Iran. CNBC's Kate Rooney explores how this high-stakes standoff could redefine the relationship between Big Tech and the U.S. government for years to come.