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

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A US flag flies off the stern of a tour boat at the Port of Los Angele in California on July 31, 2025. (Getty Images)