The president plays a crucial role in foreign policy decision-making by setting the nation's overall diplomatic agenda and representing the country in international relations. As commander-in-chief, the president can direct military actions and negotiate treaties, which often require Congressional approval. The president also relies on advisors such as the Secretary of State and national security staff to inform decisions and respond to global events. This multifaceted role encompasses balancing domestic priorities with international responsibilities, shaping how the U.S. engages with other nations.