I think both sides are loosing site the casulties are very massive.
Neither Russia or Ukraine has enough young men keep sending them 2 the Front Lines.
Unlike most conflicts we have fought the last 30/40 years or so with Air Superiority this is a War Of Attrition its Artillery dug in the trenches & a meat grinder remeniscant of the world wars.
Again both sides are running outta fresh new faces to send 2 the front lines.
Negotiations will be had sooner than later