>But they (Russia) have to be beaten back from Ukraine and humiliated.
What you propose seems uninformed by the fact of residual Cold War armaments in Russia. Lots of them.
Go study the Cold War for a week or two, focusing on MAD.
Hooboy. I lived during the cold war, and I know all about MAD. And if America or other nuclear armed countries get involved, there would be MAD, yes.
But remember Vietnam? America had lots of Cold War armaments when it stumbled into Vietnam, and Russia provided Vietnam with lots of conventional armaments, and being devious little bastards, they fought very effectively with those armaments. America was beaten, humiliated, and left.
Remember Afghanistan? The Soviet Union stumbled into Afghanistan, and guerilla fighters supplied by the US beat and humiliated them and chased them out of the country, despite all the Cold War armaments that they had then and still have.
That is what Ukraine is doing, only the West is not adequately supplying them. Give them MIGs and anti-aircraft batteries, Iron Dome and Patriot missile defenses, along with the other swag they’re getting, and wish them good hunting, but stay on the sidelines. They can enforce their own damned no-fly zone, and G-dspeed. Russia will be humiliated. It will serve them right.