...russians capture a city of no stratgegic value that has been reduced to inhabitable conditions and it only cost em a fleet of tanks and thousands of troops. This is what we call a Pyrrhic victory.
A Pyrrhic victory is a victory that inflicts such a devastating toll on the victor that it is tantamount to defeat. Such a victory negates any true sense of achievement or damages long-term progress.
...couple more victories like this and Russia will have to surrender.