On What Really Matters, Walter Russell Mead discusses Signalgate, Palestinian protests against Hamas, Vice President JD Vance’s trip to Greenland, and what President Donald Trump sees when he scans the Middle East.
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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)