Deep-pocketed, sovereign wealth funds are among the investors clamoring to get a stake in Anthropic, the red-hot artificial intelligence startup that's taking on OpenAI. One country that's being left out: Saudi Arabia.As bankers line up a group of potential new Anthropic backers, the company has ruled out taking money from the Saudis, according to people familiar with the matter. Anthropic executives cited national security, one of the sources told CNBC. The stake in Anthropic is for sale becaus...