Korea is one of the five locations that feature in both of the Spec Ops II games, Green Berets and Omega Squad. It does not need to be completed in any order. Interestingly, North and South Korea are not specified, although they had long since split before the release of the game. One could infer from this that the game is set before that point in time, that the missions take place somewhere along the border, or that the designers simply did not feel that it was a necessary element.