Yes, you'd have to be insane to invade China. Their massive army makes it mass suicide.
Maintaining that deterrence is the the actual disadvantage to China - not the risk of invasion, but the cost of preventing invasion.
Maintaining that deterrence is the the actual disadvantage to China - not the risk of invasion, but the cost of preventing invasion.
Battles are rapidly migrating to the air (drones, missiles, etc.) and cyberspace.