At this stage, it is clear that the underlying reason for this war is the resentment towards democracy and the Western way of living, which also motivates a number of whataboutist posts over this forum and here.
Russia (and maybe China) final aim is to annihilate Europe and the US in order to destroy individualist societies and control their own populations, towards they know better what communal goal, if any and if one they have to sell (nope, really not, they are just oligarchs and burecrauts, that’s why people prefer democracy wherever they can). This is not solved easily with talks, especially if or when China starts doing their Taiwan job, at different level of equipment, attitude and threat.
I bet Putin (and maybe Xi) are still evaluating selectively nuking Western Europe and the US. What kind of world would remain, after they wipe 1/5 of the inhabited planet out? Can they survive the environmental clusterfeck, in case? That’s the point, imho, with Ukraine just being a dummy, a test case for the resilience of the West.