What is a possible outcome of the peace talks regarding the Ukraine-Russia conflict?

According to Kurt Volker, former US Ambassador to NATO, one possible scenario is that negotiations might result in a ceasefire without a comprehensive agreement. In this situation, the fighting would stop temporarily, but no further substantive agreement would be reached between the parties. Volker suggests that if this occurs, the international community would need to establish deterrence mechanisms to prevent future Russian aggression. This highlights the diplomatic challenges in securing a lasting peace agreement, given Russia's maximalist objectives and the complex nature of international negotiations around the Ukraine conflict.