I can't remember for certain where I saw it, perhaps in a dream, one of the situations in which we could see a nuclear war is China betraying Russia for the USA. This could play out exactly like that scenario if the US orchestrated a coup here or were in on it. I'm not really buying it though as they're fate is now tied to Russia's. After the betrayal though Russia nukes major Chinese cities and infrastructure targets and closes itself off from the world and everyone everywhere gets really nervous.