war does not balances,it eliminates one out of the game most of the time.No 2 states can be perfectly equal they have their one disadvantages and today often one is always superior...Iraq war..current Ukraine issue.
No. I believe deterrence is the term you are looking for :/
Unless of course you are questioning if war is a natural way to keep long term balance of power in check, survival of the fittest or something like that, then I would still say no.