Russia would be wise to use this opportunity to bleed the West in its air defence stock. It's in its interest to do so. SM-3, THAAD production is something like 60-70 a year...
Raytheon only makes 550 patriot interceptors a year at the peak of the Ukrainian crisis. Ukraine's air defence is running incredibly thin already. This is an opportunity to bleed them further, if they're smart.
Western nations, particularly anglo suckson's, have de-industrialised for the better part of the past 40 years. Industrial centre of gravity has shifted east, which has a capacity orders of magnitude times higher than the combined west. By a factor so vast, Alien species will measure WEST vs East Industrial capacity using the Khardsheav scale.
If US gets dragged into this, you can forget about their Asia pivot. Actually, even without being directly involved, supporting their little ethno-state in the middle-east, going against the natural equilibrium of things (AshkaNazzis settlers in the middle east is a thermodynamically unstable phenomenon), ALONG with their commitments in Ukraine, will drain them faster Stormy Daniels drains Trumps ballsack