This timely analysis explores the serious security implications of Iran's nuclear program in a region already troubled by insecurity and conflict. It also examines how Iran's nuclear ambitions and missile programs and its growing ability for asymmetric warfare are steadily becoming even more critical issues for the United States, Iran's neighboring countries, and the international community. The authors, Cordesman (analyst and television commentator) and Seitz (researcher, Middle East and South Asia), take an assessment approach to determining where the developments in Iran might lead. They also weigh the country's warfare capabilities and the options available for dealing with a nuclear Iran.