Russia is feeling the pressure to get off the fence and formally join up with the rest of the nations on the winning team in the coming World War.
China has got 5000+ miles of missile tunnels and is deadly serious about emerging the victor. All Russia has to do is support them with some tactical moves and WW3 will be wrapping up in a couple of weeks.
Anybody who thinks this is all sabre rattling has completely lost the plot. Whenever I hear some idiot say this looks like the start of a new Cold War I pity him. This is a hot war coming.