At the end of WW II—as Patton crossed the Rhine into the Fatherland—Adolph Hitler ordered that the SS mount poison gas on V-2 Rockets and launch them at the advancing Americans. The rockets were readied but a German general said no and it was never done. There may be some generals in Iran who are not willing to see their nation bombed into a nuclear wasteland. They are not all fanatics willing to die for an abstract idea like the 12th Iman.
You can't say that about Iran.