On What Really Matters, Walter Russell Mead offers an extended excerpt from his recent book, The Arc of a Covenant: The United States, Israel, and the Fate of the Jewish People.
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President Donald Trump shakes hands with President of the European Commission Ursula von der Leyen as he announces a trade deal with the EU at Trump Turnberry golf club on July 27, 2025, in Turnberry, Scotland. (Andrew Harnik via Getty Images)