In a greeting to the Iranian people on the occasion of the traditional New Year (Nowruz) holiday last week, Secretary of State John Kerry exposed a secret that journalists and academics have been agonizing over for the past six weeks: the fact that his daughter has married an Iranian-American who has extensive family ties to Iran. “I am proud of the Iranian-Americans in my own family, and grateful for how they have enriched my life,” Kerry said in the official statement. Kerry also said he was “strongly committed to resolving” the differences between the United States and the Islamic Republic...