Last Thursday was the second anniversary of the killing of Iran’s Islamic Revolutionary Guards Corps (IRGC) Quds Force commander Qassem Soleimani; while the date passed virtually unnoticed in the United States, it was a major event in the Islamic Republic of Iran, featuring numerous threats of revenge from enraged Iranian leaders. One of these stood out from the others: Soleimani’s successor as Quds Force commander declared that the revenge would come from inside the United States. Iran’s state-controlled Tasnim News Agency reported that Brigadier General Esmaeil Qaani was “delivering a speech to a ceremony in Mashhad” for the anniversary...