On What Really Matters, Walter Russell Mead discusses the public spat between Donald Trump and Elon Musk, the artificial intelligence threat to white-collar jobs, Ukraine’s drone attack on Russian aircraft, and Zero Day, a new 10-part Taiwanese TV drama about a war with China.

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A US flag flies off the stern of a tour boat at the Port of Los Angele in California on July 31, 2025. (Getty Images)