In most areas Russia has spent a year building 3 lines of defense with trenches and mines.
Ukraine has yet to break even the first line of defense in the north, east, or south. 25,000 casualties in 2 mos.
With no air power the tanks get funneled into mine fields and West Trannies get killed in tanks while **** each other.
Why Ukraine's counter-offensive is failing - Responsible Statecraft