FTB. "T" stands for "the". That landfill needs to be carpet-nuked.
A second Korean War may go nuclear, but you don't want to do that. The prevailing winds will blow the fallout here to the U.S. within 3-5 days. The more you use, the more radioactive fallout will drift this way.
Also, you have to think about the neighbors (our allies and troops). I read that 100,000 American civilians live in and around Seoul. Same idea goes for Tokyo.