Given that Belarus is a country under illegal occupation by the Russians, it is naturally important for the world to ensure that new countries do not have access to nuclear weapons. This remains a concern for Canada.
Concerning the discussions between the Russian Federation and Ukraine, no ceasefire was agreed upon, which means that the war is continuing. Even though discussions are ongoing, children are still being killed by Russian soldiers. That makes the discussion even more important, but we don't exactly know what the end result will be.