Which aspect is emphasized in the National Defense Strategy for building alliances?

The correct choice focuses on global operational effectiveness as emphasized in the National Defense Strategy for building alliances. This aspect is crucial because it highlights the importance of collaboration among allied nations to ensure that they can efficiently respond to various global threats and challenges together.

By fostering global operational effectiveness, the strategy aims to enhance interoperability between allied forces, allowing for seamless coordination in joint military operations. This not only improves the readiness and capabilities of partnered nations but also bolsters collective defense efforts, ensuring that alliances are not just symbolic but functionally robust in the face of potential threats.

The focus on operational effectiveness underscores the need for practical, real-world applications of defense policies and collaborative defense strategies, reinforcing the idea that strong alliances are built upon shared capabilities and coordinated actions.