While it is possible for Russia to mount another offensive of equal proportion, I think doing so will deplete them of their reserves significantly. That will leave them vulnerable. Not worth to do that especially under their current economic conditions.
Even if Russia will be pushed to the border, they can keep ranged aggression for a very long time.
The only 2 counters to that:
- Build completely impermeable air defence
- Gain counterstrike ability on enemy airfields, rockets, artillery