As far as biographies go, the two men in charge of the delicate negotiations between Iran and the United States over Tehran’s rapidly advancing nuclear program couldn’t be more different.

Make Iran dismantle its nuclear and missile programs. Then its top negotiator started softening his tone, and had to retreat.

President Donald Trump on Thursday said he was in no hurry to launch an attack on Iran over its nuclear program, a day ahead of U.S.-Iran talks in Rome. Asked about a New York Times report that said he had waved off an Israeli attack on Iran,