President Jimmy Carter's national security adviser, Zbigniew Brzezinski, has died at the age of 89. Walter Russell Mead speaks about Brzezinski's influence on U.S. foreign policy.

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This photograph shows a Dassault Rafale aircraft parked on the tarmac of the French Air and Space Force Luxeuil-Saint-Sauveur Airbase in Saint-Sauveur, France, on March 18, 2025. (Ludovic Marin/AFP via Getty Images)