“Over the past century, the Korean Peninsula has undergone two fundamental geopolitical shifts. From 1905 to 1910, Japan, after displacing Russia from the contest for control over Korea by war, imposed a protectorate status over the Korean monarchy in 1905 and absorbed the entire Korean Peninsula as its colony in 1910. Then, in 1945, Korea was partitioned and became engulfed in war five years later. In both cases, action or inaction by U.S. leaders was a key driver”
Life After Kim | Foreign Policy
Basically:
- US causes stability
- US withdrawal upsets the region’s balance of power.