This chapter examines the history of the Cold War in Southeast Asia. It explains that the onset of the Cold War coincided with nationalist struggles and decolonization, and explains why Southeast Asians should appreciate that the Cold War is a historical event which has significantly affected the development of their countries, particularly in terms of the role of the Cold War in shaping the political development of the nation-states and interstate relations in the region, and the growing interest in rewriting the history of the Cold War.