Cycles of History: China, North Korea and the End of the Korean War by Sheila Miyoshi Jager

“…For the first time since the founding of the Choson dynasty in 1392, China would have little influence over the Korean peninsula.China regained much of its influence over North Korea during the Korean War years (1950-53) when Mao decided to intervene in that conflict once UN forces crossed the 38th parallel north after landing at Inch'on in September 1950, thus saving North Korea from certain defeat (Chinese forces did not leave the peninsula until 1958). …”
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