Big organization like NATO has to provide solution to the conflicts since they claimed to be a peaceful bloc. But from what we could see is that they offer non, for them its all about control which we can see thru the sanctions and regime change.

In this conflict, only Russia seem to be open to negotiation. They even warn that Ukraine's NATO entry will result to war but they still pushes it.
Now that each party have been gathering allies already, its becoming harder to prevent.