Steven A. Pomeroy has authored the first history of the American mobile intercontinental ballistic missile (ICBM), a technology the United States spent four decades and billions of dollars creating but never deployed.<i>An Untaken Road</i> showcases how the evolution of a technology that ultimately never existed and the politics that surrounded it end up significantly shaping American nuclear strategy and forces for decades.<br><p>Utilizing recently declassified documents, years of experience, and an unrivaled passion for the history of military technologies, Pomeroy has created a new framework on the nature of strategic weapons technology innovation. This thorough study of a &quot;road not taken&quot; is a must read for those seeking to understand the challenges and constraints on U.S. military weapon programs, especially when inter-organization competition, domestic politics, strategic needs, and new technologies collide.</p>