At the Council on Foreign Relations, Michael Doran debates Ray Takeyh and Barbara Slavin on President Joe Biden’s failed Iran diplomacy, the prospect of a nuclear Iran, and the threat Tehran poses to the global order.

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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)