What Act made the National Security Strategy a mandatory requirement for enhancing joint planning and operations?

The Goldwater-Nichols DoD Reorganization Act of 1986 is the legislation that requires the National Security Strategy to be a mandatory component for enhancing joint planning and operations. This act was pivotal in reforming the military structure of the United States by emphasizing the importance of joint operations among the different branches of the armed forces.

One of its key provisions was to strengthen the role of the Chairman of the Joint Chiefs of Staff (CJCS) and to enhance the strategic planning of military operations across the services, ensuring that their missions aligned with the overall national security objectives of the United States. This alignment necessitated the formulation of a National Security Strategy that serves as a framework for defense planning and operational readiness.

The other options listed do touch on aspects of national security and defense, but they do not specifically make the National Security Strategy a mandatory requirement in the same way that the Goldwater-Nichols Act does. The National Security Act of 1947, for example, established the National Security Council and outlined the basics of national defense structure but did not specifically mandate the National Security Strategy. Similarly, although the Defense Authorization Act and the Posture Statement Act are important in funding and describing military posture, they do not establish the requirement for the National Security