There might be a power struggle, but a civil war? Nope. For that, you'd need (at least two) roughly equally matched adversaries controlling the armed forces. You don't see anything like that and such division doesn't spring up out of nothing.
China will also not invade Siberia, it's much easier to control it economically than turning your quasi-ally into a mortal enemy. (besides, nukes)
China will also not invade Siberia, it's much easier to control it economically than turning your quasi-ally into a mortal enemy. (besides, nukes)