On What Really Matters, Walter Russell Mead discusses why China, Russia, and North Korea haven’t come to Iran’s aid; what Zohran Mamdani’s primary victory in New York could mean for national politics; how Donald Trump understands Europe and the North Atlantic Treaty Organization better than Barack Obama or Joe Biden did; and what the long-term significance of the United States’ bombing of Fordow might be.
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The Taiwan Semiconductor Manufacturing Company’s Fab 20, which specializes in the production of 2-nanometer advanced chips, in Hsinchu, Taiwan, on March 28, 2026. (Getty Images)