What is the primary use of military force as an instrument of national power?

The primary use of military force as an instrument of national power is indeed a show of force. This approach serves several strategic purposes. Demonstrating military capability is a way for a nation to project power, deter potential aggressors, and reassure allies of its strength and commitment to defense. It conveys readiness and willingness to respond if national interests are threatened, which can influence the behavior of other states and groups. By showcasing military might, a country can often achieve political or strategic objectives without having to engage in actual combat, as the mere presence of military power can lead to a shift in the dynamics of international relations.

Other options like propaganda dissemination, economic sanctions, and diplomatic negotiations play important roles in national strategy but are not directly representative of the military's primary function. Propaganda focuses on shaping public perception, economic sanctions aim to pressure nations through financial means, and diplomatic negotiations seek peaceful resolutions. While these methods complement military strategies, the immediate demonstration of military capability embodies the essence of military force and its role in national power.