Public opinion plays a critical role in shaping foreign policy by influencing decision-makers and affecting diplomatic relations. Governments often assess public sentiment to gauge support for international actions, including military interventions and trade agreements. Public opinion can shift rapidly in response to global events or crises, requiring policymakers to adapt their strategies accordingly. Additionally, media coverage and citizen activism can amplify particular issues, making them more prominent in the political discourse. Ultimately, responsive foreign policy is crucial for maintaining legitimacy and securing public support.