On the legal side of things, anything that takes place in a court room is simply always an attempted reenactment of anything that happened.
That said, Putin’s Russia has so much evidence at this point of the most horrific war crimes of this generation, the case is against him and his war on all counts internationally – with Europe’s number one prosecutor now pursuing the sanctions:
https://www.kyivpost.com/post/13719
Some of the sanctions do work but not policed well enough. What really works more than anything is self-defense weapons to repel the Russian invaders.
That is what will bring about negotiations after Putin’s Russian invaders leave Ukraine.
Interesting note on the Dragon Capital stuff also going on at the moment here:
Some stuff overlaps there between Ukraine, Russia and China.