S:  No, it doesn't.  Winning requires holding what is dear to a country (center of gravity) at risk.  People can bring pressure to bear upon their leaders to sue for peace but that is all.  Oftentimes the political objectives of a war are not militarily achievable.  At that point politicians should opt to disengage but their ego's get in the way so they blame the military for the failure and many buy that.  War is started and ended by politicians - period.