What is the primary mission of the United States Navy?

The primary mission of the United States Navy is to deter aggression and defend the nation. This mission is central to the Navy's role in national security, as it operates under the principles of deterrence, which involve preventing adversaries from taking hostile actions by showcasing a strong military presence and capabilities. The Navy achieves this through a global presence, readiness to respond to threats, and the ability to project power in various maritime environments.

Moreover, the Navy participates in strategic deterrence by maintaining a credible force that can respond to any potential aggressors, thereby safeguarding U.S. interests and allies. This mission is embodied in various naval strategies, including forward deployment and the ability to conduct operations in diverse environments, which collectively contribute to maintaining peace and stability in international waters. While other options reflect important aspects of naval operations, such as enforcing laws or providing humanitarian assistance, the core directive remains focused on deterring threats and ensuring the defense of the nation.