Improvised Nuclear Devices (IND) Radiological Dispersion Devices (RDD) offers a clear and compelling examination of one of today's most urgent global security threats. Drawing on decades of expertise, it explores the devastating potential of nuclear and radiological terrorism-whether through improvised nuclear devices (INDs) or radiological dispersion devices (RDDs)-and the far-reaching human, economic, and psychological consequences such attacks could cause.Going beyond the identification of risks, the book provides practical strategies and solutions for prevention and response. It underscores the importance of international cooperation through the IAEA and global treaties, while highlighting the need for national preparedness-strengthening border security, intelligence systems, detection technology, and emergency response. It also emphasizes public education as a key element in reducing fear and enhancing resilience.Written by Dr. Michael L. Madigan, a U.S. Army veteran with over 34 years of service in Chemical, Biological, Radiological, and Nuclear (CBRN) defense, this work combines real-world experience with academic expertise. Serving as both a guide and a call to action, it equips policymakers, security professionals, and concerned citizens with the knowledge and tools needed to confront and prevent the threat of nuclear and radiological terrorism.