If such is indeed the case, and the author makes a statistically good case for a preventative war, I think that there are a myriad of variables unconsidered.

These include, but are not limited to: the reactions of China and Russia; actions by other nuclear armed UN countries; status of anti-missile defenses in the US, ROK, and Japan; and whether or no the US is supposed to "go it alone." This does not include whether or not the US currently has the internal support to be so involved or if the militaries of the US and its allied are able to effectively wage war at all.