Demographic changes influence national security policies by altering perceptions of threats and vulnerabilities. As populations evolve, shifts in age, race, and migration patterns can impact security priorities and strategies. For example, increasing diversity in a population may necessitate more inclusive security measures to address concerns related to identity and community relations. Additionally, demographic trends, such as aging populations, can strain resources and require adjustments in defense and social services. Policymakers must consider these changes to create effective national security strategies that reflect the complexities of a diverse society.