'Deterrence' of North Korea could cost millions of lives

Kevin James:

Choosing to deter North Korea is to engage in a gamble: you avoid the costs of a preventive war today when North Korea is relatively weak, but you run the risk of an accidental nuclear war later when North Korea is vastly more powerful. Using plausible estimates of the probability of accidental nuclear war derived from the U.S.-Soviet experience during the Cold War, I find that gambling on deterrence will lead to 7.5 million U.S.-South Korean-Japanese deaths on average (under optimistic assumptions) while a preventive war now will lead to 1.4 million deaths (under pessimistic assumptions). So, not only is deterrence a gamble, it is a reckless and foolish one. Preventive war is the wise and prudent response to North Korea's nuclear threat.
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I tend to agree that the time for a preventive attack is before they can ramp up their missile and nuclear weapons production from its current stage.  They have made enough threats to justify a preventive war.