Which mission focuses on preventing the development and use of weapons of mass destruction?

The mission that focuses on preventing the development and use of weapons of mass destruction is counterproliferation. This mission encompasses a range of strategies and activities aimed at stopping the spread of nuclear, chemical, and biological weapons. Counterproliferation efforts involve intelligence gathering, diplomacy, sanctions, and if necessary, military action to deter or respond to threats from states or non-state actors seeking to acquire or develop such capabilities.

Counterproliferation is critical for maintaining international security and stability, as the proliferation of weapons of mass destruction poses significant risks not only to nations directly involved but also to global peace and security. This mission helps enable nations to work together to prevent hostile entities from acquiring technology that could lead to catastrophic consequences.

In contrast, while the other options involve important defense and security activities—such as special reconnaissance focused on information gathering, counterterrorism addressing violent acts by non-state actors, and humanitarian assistance aimed at providing aid during crises—they do not specifically target the prevention of weapons of mass destruction.