Nuclear security policy is a field of academic inquiry and practical policy development focused on preventing malicious acts involving nuclear and other radioactive materials, associated facilities, and transport. It investigates the threats, vulnerabilities, and policy frameworks, as well as the technical, organizational, and human reliability measures designed to protect against theft, sabotage, unauthorized access, or diversion of such assets. Characterized by its interdisciplinary nature, this concept is significant for understanding and mitigating the risks of nuclear terrorism and proliferation, thereby contributing to international security and the safe deployment of nuclear technologies.