Ask HN: Resources to Understand the Conflict?

Of course speaking about the conflict between Russia and Ukraine.

I'd be interested in understanding better what a diplomatic end of the war would look like. That is: what exactly both parties are likely to give up to end the conflict early? What does "early" likely mean?

I know that the question is very broad and answers can only be guesses: instead of focusing on opinions, perhaps it might be useful to share sources, tweets and explanations from experts.