On What Really Matters, Walter Russell Mead discusses Elon Musk鈥檚 departure from Washington, America鈥檚 nonexistent shipbuilding capacity, plans to revoke visas from Chinese students, and the conspicuous absence of Joe Biden鈥檚 foreign policy team from the new book on the "coverup" of his condition.

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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)