Japan has a hell of a military (ahem, "self-defense force), but the others... India has some serious logistical problems, especially on its Chinese border, and

Japan has a hell of a military (ahem, "self-defense force), but the others... India has some serious logistical problems, especially on its Chinese border, and it's having a hard time fixing it. The Chinese have been pushing into Arunchal Pradesh with impunity because they have the supporting infrastructure on their side of the border that India doesn't. (India also has nukes, but we're a long way from that mattering.) The Philippines sadly has little military capability to speak of. Other countries are effectively donating hardware to them (ships, mostly), but at the moment their best defense lies in their political ties, and the best help they can offer is to serve as a staging point for other nations' forces. Korea is a funny one, though. They're friendly to the Filipinos (and Americans), but the people there share a lot of the anti-Japanese sentiment seen in China. I think the scope of any role they play will be pretty path dependant, mostly hinging on where things flare up first.