What role does the Department of State NOT fulfill in assisting the Department of Defense?

The role that the Department of State does not fulfill in assisting the Department of Defense primarily centers around creating strategic military alliances. While the Department of State plays a significant part in shaping U.S. foreign relations and influences the broad framework within which military alliances can be formed, the actual creation of these strategic military alliances is primarily a function of the Department of Defense.

The Department of State focuses on managing diplomatic relationships, negotiating agreements and treaties, and promoting mutual understanding between the U.S. and other countries, which are critical for establishing the context in which military alliances might operate. However, the tactical and operational aspects of forming and maintaining military alliances, including strategic military partnerships, are generally led by the military and defense establishments rather than being a direct function of the diplomatic efforts of the State Department. This division of roles ensures that both departments can effectively execute their mandates in the overlapping yet distinct domains of diplomacy and defense.