Victor Davis Hanson explains at National Review Online why a nuclear North Korea creates a special problem for the United States.

When North Korea eventually builds a missile capable of reaching the U.S. mainland, it will double down on its well-known shakedown of feigning indifference to American deterrence while promising to take out Los Angeles, San Francisco, or Seattle unless massive aid is delivered to Pyongyang.

Kim Jong-un rightly assumes that wealthy Western nations would prefer to pay bribe money than suffer the loss of a city — and that they have plenty of cash for such concessions. He is right that the medicine of taking out Kim’s missiles is considered by Western strategists to be even worse than the disease of living with a lunatic regime that has nukes.

No wonder that the Clinton, Bush, and Obama administrations had few answers to North Korea’s serial lying and deceit about its nuclear intentions. …

… Australia, Japan, South Korea, Taiwan, and the U.S. need to coordinate a massive missile-defense project aimed at ending North Korean assumptions that even one of its missiles has a chance to reach its intended target. Such a Marshall Plan–like investment would also send a message to China that its own nuclear deterrent could be compromised and nullified by the defensive efforts of its immediate neighbors.