They are war criminals and are not fulfilling their end of the bargain vis-a-vis the UN. I can't imagine they are fully comprehending the effects of their actions on their two handfuls of geopolitical relationships or their internal economic hierarchy.

Putin is literally defenestrating oligarchs and stealing assets (for what its worth, just like asset forfeiture actions in the USA).

If they use tactical nuclear weapons, that would be a sad day for the human historical record and a reflection of the deeply offensive insanity of their regime. I would expect, based on Jake Sullivan's words last week or two, that in response the US and maybe some subset of its many NATO allies will use a McSupersized dose of Freedom^TM via conventional weapons and liberate all the Russian vessels in the Black Sea from this plane of existence.

China is definitely an ongoing threat but it makes sense to approach things one at a time. I don't think we should feel any need to focus on peace.

Russia needs to be completely humiliated, economically and geopolitically.

They have shown they are not a reasonable actor on the world stage and will have to make amends for many decades to demonstrate that they are starting down a path that approaches what you'd expect in a modern day neoliberal society. Putin has to go as a pre-requisite for the above.

Furthermore, we must somehow install a sense of deep fear in Russia's population - contingent on the fact that what enabled that state to exist in its previous and currently present form, is fundamentally incompatible with the new state of the universe.

We have to show them this fact and do what we can to help them understand, in any way we can as citizens of the world that any future where Russia's relevancy returns... that it is all pre-requisite on a potential future state of existence (that is not the one that is currently in existence) where the current trajectory of their rotten husk of an administration is a distant memory.

That time is not now, and every additional terrorist action that is taken by the invading country's regime is an action that pushes that moment further into the future.