If USA would use nukes against NK, (which borders China AND Russia) I have the feeling that the next nukes would have gone off to NY, or CA (or somewhere equall

If USA would use nukes against NK, (which borders China AND Russia) I have the feeling that the next nukes would have gone off to NY, or CA (or somewhere equally painful for the USA). Horror/WW3 scenarios apart, it's most likely that USA-originated sanctions have absolutely nothing to do with this, as if Russia and China want to support the continuation of NK-regime, there is no way to force them to stop. I'd say that pressure from Russia and China are pushing for the permanent resolution of this conflict. It's a tiny/annoying thorn in their sides, and sooner or later they will remove it.