The news about John Kerry is startling. The former U.S. senator from Massachusetts and secretary of state, now President Joe Biden’s climate czar, is accused of leaking sensitive—possibly classified—information to an enemy power, Iran. The accusation surfaced in a news story about the supposedly off-the-record comments by Mohammad Javad Zarif, Iran’s foreign minister, made in March to an Iranian journalist, who recorded the conversation in a three-hour audio file. Zarif’s words were leaked to a London-based Iranian publication called Iran International, and then the New York Times ran with the story on April 25. While offering a candid commentary about...