Walter Russell Mead discusses Israel-Iran war worries, European bans on youth gender care, an Indonesia-Israel normalization agreement, and why Tucker Carlson is peddling the antisemitism of the Russian czars on What Really Matters.

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The P4 laboratory, on the campus of the Wuhan Institute of Virology, in Wuhan, in China's central Hubei province. (Hector Retamal/AFP via Getty Images)