What If the North had won the Korean conflict outright? How would this effect postwar United States policy in regards to the Asia/Pacific region? What about U.S. attitudes towards the rearming of Japan and future military intervention?
For that matter, what about Japanese attitudes - racial prejudice between Japanese and Koreans has historically been deep and ugly, especially since the colonial period (1910-1945).
Also, with the whole of the Korean peninsula now under Kim Il Sung's control, what does Korea do next? Build The Bomb? Attempt to "liberate" Japan (unlikely, IMOHO)? Or just stay isolated from the rest of the world even longer then the OTL North Korea has thus far?
I wonder: The United States should be able to keep Jeju-do island island from falling under Communist rule, given its overwhelming naval superiority. I suspect that Jeju-do will be to Korea what Taiwan is to China, that is, the last refuge of the defeated political faction. Of course, it all depends on whether or not many survive.