User blog comment:PitaKang/Funday Monday 2: Could South Korea defeat a North Korean invasion?/@comment-665531-20130425125214

A war between the North and South would devastate Seoul, possibly ending South Korea's economic fortunes. However, even ignoring the likelihood of foreign intervention, the North would suffer far greater losses. And seeing as how the United States already has tens of thousands of troops in South Korea, they wouldn't remain out of action for long.

If anything, I expect North Korea to run wild shelling the South and taking some territory for a week or two, lose its gains within days, and be completely conquered in a matter of months.