Congressional Research Service Reports

The Sea of Japan (Eastern Sea) abuts its eastern shore; the Yellow Sea and Korea Bay wash the west (see Orientation Map). A nearly uninhabited Demilitarized Zone, 2.5 miles wide and tilted slightly from southwest to northeast across the 38th Parallel, presently separates North from South Korea. Fifty-five percent of the peninsula lies in DPRK territory; the Republic of Korea occupies the rest ... ................
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