Korea
From Tardis Wiki, the free Doctor Who reference
Korea was a region in Asia that, in the 21st century, was divided into two separate nations, North Korea and South Korea. (TV: The New World)
In December 1950, Rhodes fought with US Army against the Red Chinese, who came across the Yalu out of Manchuria, on a frozen hilltop south of the Changjin Reservoir in Korea. (COMIC: The Good Soldier)
In a parallel universe, Korea was part of the Big Six, while the separate East Korea refused to sign the Steinberg Agreement. (AUDIO: The Flood)