North Korea is known to have the world's largest artillery force.

South Korea's capital city is only 35 miles from the border.

Although the range of Kim Jong-il's arsenal is fodder for debate, it's certain the rogue dictator could hit Seoul with many shells in a matter of hours. He did take a few potshots last January. This threat is a key reason North Korea can bully its neighbor and stand up to US intervention.

Our Map Of The Day shows artillery range projections by an amateur researcher at MilitaryPhotos.net.