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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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)