Walter Russell Mead discusses homeschooling, the United States–Japan–South Korea security pact, artificial intelligence’s threat to the nation state, China’s economic woes, The Magic Flute, and Fidel Castro on his podcast What Really Matters.
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The P4 laboratory, on the campus of the Wuhan Institute of Virology, in Wuhan, in China's central Hubei province. (Hector Retamal/AFP via Getty Images)