"Iran’s stance has always been clear on this ugly phenomenon [i.e., Israel]. We have repeatedly said that this cancerous tumor of a state should be removed from the region.” No, those are not the words of Iran’s president, Mahmoud Ahmadinejad, speaking last week. Rather, that was Ali Khamene’i, the Islamic Republic of Iran’s supreme leader, in December 2000. In other words, Ahmadinejad’s call for the destruction of Israel was nothing new but conforms to a well-established pattern of regime rhetoric and ambition. “Death to Israel!” has been a rallying cry for the past quarter-century. Ahmadinejad quoted Ayatollah Khomeini, its founder,...