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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US President Donald Trump reacts after signing executive orders imposing tariffs on imported goods in the Rose Garden at the White House on April 2, 2025, in Washington, DC. (Andrew Harnik via Getty Images)