President Barack Obama wishes the Islamic Republic of Iran every success. Its leaders, he explained in a recent interview, stand at a crossroads. They can choose to press ahead with their nuclear program, thereby continuing to flout the will of the international community and further isolate their country; or they can accept limitations on their nuclear ambitions and enter an era of harmonious relations with the rest of the world. “They have a path to break through that isolation and they should seize it,” the president urged—because “if they do, there’s incredible talent and resources and sophistication . . . inside of Iran, and it would be a very successful regional power.”