Thank you everyone for your compliments. Taking comments in reverse order, I’m a big fan of MacArthur, Reagan, Thatcher and Nakasone, not so much of a fan of Clinton, Acheson, et al. I think the Japanese tend to get overlooked as a staunch US ally, primarily because Japan isn’t in Europe. If it were, Japan would be seen as an equal to the UK and would be part of the Anglosphere (at least in terms of its outlook on the world). Too many of us, especially those on the left, just ignore Japan’s contributions to the Cold War win and to the current state of the war on caliphascism and the Nork business. All of that is only natural given our national heritage, but it’s still a shame.
As for what the PRC will do, it’s still anyone’s guess. Centralized unelected governments tend to do badly at foreign policy, and they tend to make colossal errors that elected governments tend to avoid. They believe in their own omnipotence, and that leads them into trouble. I don’t see the Chinese government acting responsibly until they have no other choice, and the cards the US/Japan alliance is playing now will remove the PRC’s options step by step. Once the PRC decides to act, though, it can move decisively. The main wild card remains Kim Jong-Il. Is he willing to incinerate Seoul if he thinks it will help him maintain power?
One other thing. I probably was off on the six week estimate. Some experts cite that timescale, but others (including ones who have decades of experience in the field) believe that Japan could produce nuclear weapons much faster—on the order of a week or less. The main barrier, then, to a nuclear Japan is a choice. Japan would have to have a compelling reason to build the descendant of the weapons that destroyed two of its cities. North Korea in possession of nukes and the missiles to launch them would probably be compelling enough. That is something for the PRC to think about.