We all know the real reason Trump wants to walk away from the nuclear accord. It isn’t because Iran is violating the terms, because they aren’t. It isn’t because the terms were terribly unfair to the United States, because they weren’t. It isn’t because Iran is doing things outside the agreement that we don’t like, because those actions exist outside the agreement. It’s because Donald Trump is a petulant man-baby who believes that anything that has Barack Obama’s name on it has to be destroyed, no matter what the consequences.