On Feb. 28, U.S. and Israeli missileslanded in Tehran, targeting Iranian militaryinstallations, nuclearfacilities, andleadership. In one day, Iran’s second supreme leader of almost 40 years was dead, as were a number of his senior-most military and political advisers, and the country was at war. Iran’s military was designed to survive precisely the type of U.S. intervention it faces today and to impose costs on the regional states perceived to be supporting the regime’s foreign adversaries.