P.M. Edition for Jan. 20. European leaders and U.S. markets were rattled by President Trump’s doubling down on his desire to take over Greenland. Plus, an AI tool called Claude Code, from Anthropic, is exciting developers and hobbyists alike as it speeds up their work. But as WSJ deputy tech editor Brad Olson tells us, it’s also got some of them worried. And Netflix reports higher revenue and profit in the fourth quarter. Alex Ossola hosts.

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