To say that we will never again fight the war of great mechanized armies is so near-sighted as to be blind. While I felt some of your conclusions were somewhat streched, all of them were relevant and thought provoking. That said, I would however love to see a follow-up, especially with regards to urban combat AND on how modernization affects specialized fighting units such as the Rangers and SEALs. Of the later, to see how newer, nastier weapons might assist such leading edge units until heavier support can be brought up. We are never going to have it tuned just right.
China has a strong manpower behind it.
Russia do produces mass extermination weapons, that even our big toys, will be no match in the case of a strike. And Russia will not going to joke around like they did in Afganistan. Terrorists will find the most unconventional tools to strike, and a guerila war will chip away whatever advantage we may have. I don't mention nukes anymore. The point I want to make here however is a litle different.