National identity profoundly influences foreign policy by shaping how a country perceives its role on the global stage. A strong national identity can drive a nation's pursuit of interests, values, and objectives, guiding diplomatic relationships and military engagements. Additionally, public perception surrounding national identity can affect the legitimacy of foreign interventions and the willingness to participate in alliances. Ultimately, a cohesive national identity aligns foreign policy with public sentiment, impacting both domestic support and international relations.