As such, and at no fault to NATO, the Ukrainian military has struggled to adapt to the rapidly changing threats and demands on the battlefield, and has largely moved away from NATO style combined-arms tactics in the face of a challenging offensive.
"Nato cannot fail, it can only be failed"
the usual strategy is to try and isolate the rebelling country while applying pressure, and being patient
now that it's the third country in that region, it's getting a bit too much to stay subtle