US secretary of defense Pete Hegseth directed the Pentagon to designate Anthropic a “supply-chain risk” on Friday, sending shock waves through Silicon Valley and leaving many companies scrambling to understand whether they can keep using one of the industry’s most popular AI models.“Effective immediately, no contractor, supplier, or partner that does business with the United States military may conduct any commercial activity with Anthropic,” Hegseth wrote in a social media post.The designation ...