I'm interested in this game.
I think its really interesting considering some of the things leaked from wikileaks, like the talks of a Unified Korea after KJI dies and playing nice with China, etc. So yes, it sounds fairly plausible to me. Also; Starcraft players as the lead strategists of the United Korean military... lol
Really for this game it doesn't sound as much as FUCK YEA AMERICA as MW2 did. This is more like an outside force has invaded your homeland, put all of you in prison camps, and is putting a severe kink in your plans, and generally ruined your day. So you are going to fight to push back this invading force with the goal of preserving not just your life, but your way of life. Really that's a theme that can be replicated and replaced in any country.
Granted, I haven't played the game yet either.
MW2 seemed more like "AW HELL NO. We ain't gonna let these bastard try and kick our asses on our home turf are we?" "HOORAH." America, fuck yea, type of game.