I think Japan and South Korea should announce they're going nuclear and then tell China that if Seoul is ever struck by North Korea, they will treat that as if China attacked them and respond by hitting Beijing. I believe THAT would compel the do-nothing Chinese to reign in their bad dog in North Korea.
. Our nuclear strike capable subs should be the biggest motivator out there for these players to act right. Not sure what is causing the world to go crazy now, other than our very own turmoil that has the world guessing like we were when the Soviet Union crashed.
I think the idea of Japan and South Korea going nuclear would compel China to finally do something about North Korea. Furthermore, the South Koreans would pay the highest price if war breaks out...again. We sort of have our hands tied UNLESS the north does something especially egregious.
. Shouldn't we just supply them with the nukes needed, and with the launch systems as needed strictly for their DEFENSE, and not promote them to become a nuclear power if not currently one now ??? Enough of this proliferation right ?? We should be highly involved in the defense of these allied interest in these regions, and yet not promote further proliferation of nuke technology upon this Earth.