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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Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)