This is damn foolish. We're already past the point where there was any hope for a sane outcome.
We're at the point where the fact that we CAN'T stop this in any meaningful manner is setting a precedent that is just as dangerous as nuclear war. It's adding one more example to the growing pile of "hey look, a nuclear country can just roll over a non-nuclear one and no one's gonna actually stop them no matter what extremes they resort to" which we do not need more of. That's going to further undermine any confidence in the UN, in sanctions, hope that there's any actual way to stop a country that decides to just do what it wants except
If Ukraine caves in any meaningful way before Russia gives in, then it demonstrates a failure of what may be the harshest sanctions a country has been hit with. Which is bad, because that's basically our only option that isn't risking WWIII.
We will see a new era of nuclear proliferation, as no sane country is going to want to be a non-nuclear country if the world is going to just let a nuclear country bully a non-nuclear one with impunity, not if we see every measure short of actual military intervention fail to actually stop this.
And you'd out of your damn mind to think Russia is going to stop with Ukraine. They've already make overt noises at having no interest in that,and if they actually get anything meaningful out of this war it will tell them they can do exactly that. A NATO country is almost certainly next, and that's either going to immediately provoke WWIII, or else the international organizations that the world has spent decades piecing together to prevent war will slowly be proven utterly worthless.
Put simply, it's already out of basically everyone's hands at this point. Bad shit is going to go down at this rate. The only outcomes likely to end positively require Russia to cut its losses and accept that a loss, with or without Putin being ousted. Otherwise, we either brush with WWIII now, keep waiting until another line is crossed that forces WWIII on us later, or we see a new era of militarism, imperialism, nuclear proliferation, and more.