It’s very difficult to understand what RU is doing. If you lose a tank it’s 5M.

It’s very difficult to understand what RU is doing. If you lose a tank it’s 5M. If you lose an attack aircraft it’s 70M or more. AFAIK RU was saving the air force as a means of defending against the west, not as a means of attacking UA. It’s entirely possible that RU will choose to expand the war into eastern UA and/or POL/DEU/Baltics by air, in order to progress in UA by ground. They can attack supply lines just as we can.

Of course, if they do that then NATO will enter with air and whatnot. And AFAIK RU is positioning tacticals to enter the north sea etc to cause NATO to back down because RU assumes the west will flinch.

RU has no choice but to escalate.