The risk of war with North Korea is small, mostly because war is a very rare event in the international system. Bennett and Stam found that the risk of war in a single directed-dyad year (e.g., U.S.-North Korea in 2013) is 0.000065. Now, this current situation is much more dangerous than your average directed dyad (e.g., U.S.-Uruguay in 1996), but my guess is even if you plugged all the variables into your handy-dandy war predicting machine, you would not get much above a 2 percent risk of war onset. With that said, since the potential costs of a North Korean conflagration likely reach hundreds of thousands of casualties, the expected value of war with the Norks is unpleasantly high (let’s say, 200,000 casualties x .02 = 4,000). By comparison, there is an approximately 100% chance that 30,000 Americans will die in car accidents this year. With all of that said, I fully support anyone that wants to engage in Doomsday Prepping, because it just makes for quality television.