Russia has a mono-economy. It also has a single ideological approach to many things going on within their country. History has shown these sorts of situations tend not to end well. My way or the highway seems to be how Putin deals with everything.
The need to sort the population by ethnic lines also is problematic. How ever you slice it Putin came into Ukraine with one goal in mind, take over and exploit the resources.
Oh, and Russia has no ports, that was what was behind the taking of the Crimea.
The smart thing - imho - would have been to recognize their weakness, admit it and then broker deals. But NOOOOOOOOOOOOOOOOOO
Japan is another nation lacking many resources and when it finally wanted to enter the world markets it too wanted to dominate by cruel means and then came fat man and little boy. The country rebuilt and learned from history. Using it's strengths to share and enrich itself and the world. Germany saw the same devastation and the Marshall Plan helped get the country not controlled by the soviets back on it's feet.
Let us not forget the U.S and it's supporters also have a long and sordid history and there are certain elected officials that want cruel legislation. A rant best left for another day.

More likely the yanks can't stand anymore humiliation inflicted by Russia's outstanding successes not just on the battlefield ratio of deaths but ease of destroying NATO suplied machinery.
The only thing that attacking Russian territory is going to do is widen the conflagration. . . Russia will now be able to target the British, American & other country's factories supplying missiles to the Ukrainians. Countries sending advisory troops for so called training are likely to have the regimental bases on home turf attacked from afar.

In most wars an invasion meant one could fight back, if able, in the invaders country. This has been a very peculiar war where only one side was allowed to invade.

How wrong of the Allies to bomb Germany just because Germany had bombed them.

It has been shown our countering the SOviet Union in their war in Afghanistan is what bankrupted the country ended the communist system there. Of course we also got involved and lost against the Taliban. The latest news did have Biden caution against attacking Moscow.

Maybe America would do better at handling their own American Civil wars of endless conflicts at home. Rather than creating world wars around the world,. They have no business to be involved. It's certainly not in most peoples democracy interest or integrity when most people of this world , don't want war. And Canada and Mexico have worsen relationships at their own US boarders. One baby step at a time rather than one world order that every US President keeps repeating like a broken parrot and system as a bad example. Hope Aliens do not ever come down to visit us and say, take me to your leader.