And this time around, it is China that needs to be reined in !
if you read history, starting with the Indo Chinese war, Vietnam war and to the China Russia break up, if there's something China doesn't like to do is, to be told what to do.
The most interesting explanation from China for going after the then weak and disorganised India was something along the lines of India insulted China and she must be taught a lesson she.won't forget, but one of the hidden story says it was to thwart the then India CIA listening post plans. Among other reasons PRC refused to accept.
And when Pakistan fought with India around the same time, China just stepped aside and logically no reasons are found why China didn't step in to help their so called Ally, Pakistan.
Though as of now, a war, even in small scale, will help shore up support for the Ruling Elite of the CPP.