There are many things South Koreans need to be concerned about if, one day, it turns out North Korea isn’t bluffing.

One of those things, an expert said, is geography. Specifically, South Korea is a small, densely packed country where half the population lives in Seoul and the surrounding area. This area is within range of the North’s artillery, and this makes defense strategizing difficult.

Park Chang-kwon, one of South Korea’s leading experts on military strategy and national defense analysis, recently spoke to NK Newsabout his DPRK security fears. As a senior researcher at the Korea Institute of Defense