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Domestic events, ideological changes and the post-cold war US–South Korea alliance

How can we account for the weakening of the US–South Korea alliance after the cold war? After the cold war, the US–South Korea alliance was expected to remain strong due to North Korea's threats of weapons of mass destruction. For the past decade and a half, this realist projection has not fully come to pass: rather, it has changed inversely. How can we account for this puzzle? In explaining this counter-intuitive development, the author employs the critical juncture approach. The author argues that in South Korea, certain domestic critical events readjusted domestic ideologies that affected its alliance policy towards the USA. With the initiation of Nordpolitik after the end of the cold war (the first critical juncture), conservative anti-communism and progressive nationalism became coexistent in South Korea, thus causing frictional policy towards the USA. The 2000 North–South Korean Summit (the second critical juncture) made the progressive nationalistic move more dominant in Korea, and this ideological change made its alliance policy towards the USA less friendly.