For more than a decade, Iran has lavished a considerable share of its defense budget on its naval forces (which consist of both regular and Iranian Revolutionary Guard Corps units), believing that the Persian Gulf will be its front line in the event of a confrontation with the United States. Following a naval war-fighting doctrine that suits its revolutionary ethos, Iran has developed innovative, asymmetric naval warfare tactics that exploit its favorable geographic situation, build on its strengths, and target the vulnerabilities of its enemies. Revolutionary Naval Warfare During the Iran-Iraq War, the armed forces of Iran—particularly the Revolutionary Guards...