The Sino-Russos are inclined to more... well, just technology. Gadgets and all that. Considering what I know of Japan right now, they'd be more aligned with the whole neural processors and all that. Korea is sort of a satellite to the other larger communistic countries, so they'd likely be grabbed by the Sino-Russ Bloc before they could do anything else. North/South Korea might be divided, so that Communistic Korea is still with the Sino-Russ, while Democratic Korea went with the New Alliance.