Comparative foreign policy analysis (CFP) is a vibrant and dynamic subfield of international relations. It examines foreign policy decision making processes related to momentous events as well as patterns in day-to-day foreign interactions of nearly 200 different states (along with thousands of international and nongovernmental organizations). Scholars explore the causes of these behaviors as well as their implications by constructing, testing, and refining theories of foreign policy decision making in comparative perspective. In turn, CFP also offers valuable lessons to government leaders.
This article surveys the evolution of CFP as a subfield over time, with special attention to its contributions to academic understanding and policymaking. It begins with a review of the characteristics and contributions of CFP, followed by acknowledgment of early works that helped establish this area of study. The next section of the article reviews major thematic focuses of CFP, including theories of international pressures and factors that may drive state foreign policy as well as strong foundations in studies of domestic politics. Key internal actors and conditions that can influence state foreign policies include individual leaders, institutions and legislatures, bureaucratic organizations and government agencies, and public opinion and nongovernmental organizations. Following this survey of actors and contemporary theories of their role in foreign policy decision-making, the article develops two illustrations of new directions in CFP studies focused on political party factions and role theory in comparative perspective.