They are using the fraction of their power that they are capable of supporting and supplying, and that is not needed to guard their long borders and coast.
Five million reservists called up into barracks are useless if you cannot transport them into the theater and keep them supplied.
We are using our aviation too accurate for conventional war. As result, we've lost some (2..4) of our decent aircrafts. What supply chains do we need to use more (not ~15) bombers on higher altitudes, e.g. sacrificing precision for being protected from almost-dead Ukrainian ADS ("Buk"s or Stingers, maybe some S-300 near Kyiv)?
AFAIK, they are resupplied with Stinger ADS only, if you know more, pls tell me.
Yesterday we lost 1 aircraft in Kharkiv, which was bombing on terribly low altitude to preserve precision.
Two days ago we lost one AC in Chernigyv, same situation here.
Oryx reports 11 lost aircrafts during war, there are some listed whose nobody can prove (IMO about a half). Im not telling you that its a fake, but that resource definitely sometimes agrees with official Kyiv information.
Five million reservists called up into barracks are useless if you cannot transport them into the theater and keep them supplied.