In which John Green teaches you about the Cold War as it unfolded in Asia. As John pointed out previously, the Cold War was occasionally hot, and a lot of that heat was generated in Asia. This is starting to sound weird with the hot/cold thing, so let's just say that the United States' struggle against communist expansion escalated to full-blown, boots on the ground wars in Korea and Vietnam. In both of these cases, the United States sent soldiers to intervene in civil wars when it looked like communists might win.