As with all writing about Iran’s political process, it is important to be humble about what we can know. Our sources of information about Iranian decision-making are miserable and the Iranian governmental process is labyrinthine and unpredictable even for the most subtle and knowledgeable observers inside Iran and out. Even Iran’s public opinion is difficult to discern because the regime works hard to control sources of information, punishes dissent, and hinders the efforts of disinterested pollsters. Consequently, we are all “reading tea leaves” when it comes to trying to predict Iran’s behavior, especially on an issue as important and heavily debated as this one. All that any of us can offer is an educated guess as to what the Iranians are thinking and how they may react.