Ukraine has never attempted to occupy Russian territory and I think that may be the excuse certain people in some foreign nations will be looking for to cut back the aide.
Here's why I stressed the importance of a clear defensive military objective: If the objective were to snatch a part of Russia and incorporate it into Ukraine; or to devestate a Russian city in revenge; or something like that, then you might have a point.
But since, again, it is PERFECTLY LEGITIMATE to carry military operations into the invader's own territory and absolutely totally nothing at all wrong with this, why should a well-designed military operation to e.g. end artillery shelling of Ukrainian towns and villages, cut supply routes or bind enemy forces be such a let-down?
Just because it would be a first? We have seen many firsts in this war, and time and again, they neither led to decrease in Western support nor to meaningful Russian escalation.
Full mobilisation. From Russia's point of view it stops being a special operation to suppress supporters of Western imperialism and it starts being a war to repel the invaders.
No one in Russia is actually really kidding themselves that this is not a war, merely a SMO. No one is kidding themselves that it is going very very bad if measured by any known or imagined objectives ("Denazification": Instead ofd decreasing the will of Ukrainians and the collective West to hit Russia on the head, that will has increased manyfold. "Demilitarization": Ukraine hasmore and better weapons than at the beginning of the war, Ukraine has more and better soldiers than at the beginning of the war; Ukraine has a mighty pipeline of further modern weapons flowing in. Annexation of four oblasts: Russia has LOST territory since it pretended to annex them; and has full control over none. "Roll back NATO": NATO has expanded, keeps expanding, and is giving Ukraine a clearer path than ever to join NATO asap. Same goes for Moldova. "Re-Establish Russia as a world power on par with the USA and China": It's more and more shrinking to be China's lap-dog, losing international respect, has demonstrated its weapons systems are second-rate, and demonstrated that it is no longer as needed even for its raw materials as before)
If full mobilization were feasible and advantageous to Putin, he'd have called for it already. Everybody, including Putin, understands that a full mobilization risks losing him support, is unlikely to achieve the sort of manpower gain he'd need, and even if it succeeded would fail to give him the sort of quality human material that is needed to prevail in a modern war.
So no, that is not really an escalatory option.
From the point of view of international politics, Russia has already lost this. Its economy has been devastated, it's become a pariah, its military forces have been humiliated. Russia is finished as a world power.
You would have to qualify all of these with words such as "somewhat".
Russia has not yet lost
utterly.
The economy is not yet
utterly devestated.
Russia is not
utterly a pariah.
It's military forces won't be
utterly humiliated until they are completely run out of all of legitimate Ukraine.
The only real need to carry on this war is to ensure the survival of Ukraine and there are already people who do not think that is a cause worth supporting with any more money and arms.
Common wisdom holds that if we let Putin off the hook now with some gain, he'll be back to garb more. Then more. Then more still, and eventually take a bite at NATO countries when everybody in the West (outside the Baltics and Poland is
utterly bored with all that winning.
The right time to stop this is now.
The right outcome is for Russia to lose utterly.
Such is Putin's grasp on the media in Russia that this will not happen while he is still in power.
I think you haven't watched any snippets from Russia's leading TV propaganda shows? They are full of acknowledgements that Ukraine is doing far too well and Russia is suffering setbacks again and again. It's not something they can deny, so what they do is rationalize it and try to prepare the public for more blood and sweat. Except of course that the escalation potential isn't all that great.