The end goal for Putin at the very least transforming Ukraine into some sort of buffer again would be ideal. Whatever form it takes is flexible but the only real demand is that Ukraine remains neutral and no longer gets lethal aid from NATO.

Denazification is a bonus, but the war would have happened even without the Nazis.

For the left I think actual socialists/communists are realy salivating over the prospects of the end of the petrodollar for everyone but the west, along with an unexpected but welcomed multipolar world lead by China with India and Russia as problematic but nevertheless welcomed and useful allies or at least on common terms i.e turning hostile to the west.

For this there is a lot that needs to happen still but concrete steps are being taken like sharing payment systems between the three of them, and obviously abandoning the USD as a reserve currency in favor of bilateral agreements with yuan/local currencies.

Multiple economists/analysts already support this narrative, some would even say China/Russia were already kind of predicting all of this given their pre-war deals over the last few years. It is not useful to predict what is going to happen more than 6 months from now.

In terms of domestic western politics personally I am looking forward to seeing the EU get fucked by all the popular revolts over living conditions within the next few months. Specialy France/Germany relations are beginning to show friction e.g some French business remained open in Russia.