Iran responded for the killing of Maj. Gen. Qassem Soleimani exactly as they said they would, with an overt military strike against a pair of American military targets. While the strike was perfunctory and mostly painless for the United States, we should not assume that Iran’s retaliation is over. There is a variety of means over time that Iran can employ to extract real vengeance for Soleimani’s death. Tehran could inflict real harm on the United States and its interests in the years to come.