What is the meaning of 'nuclear security'?

The concept of 'nuclear security' fundamentally revolves around safeguarding nuclear materials and facilities to ensure they are not subjected to theft, sabotage, or unauthorized use. This definition encompasses various measures implemented to protect nuclear assets that could pose significant risks if mismanaged. The importance of nuclear security is highlighted in the context of preventing malicious acts that could lead to catastrophic consequences, such as nuclear terrorism or accidents involving radioactive materials.

While other options touch upon aspects of nuclear operations, they do not directly pertain to the core idea of protecting nuclear resources. For instance, recycling and energy production guidelines and waste management regulations are essential for the overall nuclear industry but are not specifically focused on security measures aimed at preventing threats. Hence, the option directly addressing the protection of nuclear materials and facilities effectively captures the essence of nuclear security.