Scholars have heatedly debated whether and how culture impacts and shapes a state’s foreign and security policy in particular as well as international relations (IR) in general. The cultural approach to the studies of foreign policy has experienced two major waves since the end of the Cold War. We saw a revival of cultural studies in national security and foreign policy with the rise of constructivism in international relations in the 1990s, while into the 2000s, the culture approach focused on terrorism and globalization. Despite its achievement, the cultural approach continues to face theoretical and methodological challenges in conceptualization, measurement, and generalizability. Therefore, the cultural approach to foreign policy needs to work on demarcating the boundary of “cultural variables,” focusing on mid-range theorizing and placing the cultural variables within a context.