If a violent criminal breaks into your home would you invite them to negotiate at your dinner table?
At best that is a naive point of view, completely detached from context. you say “those who started the war might even be exposed” as if that wasn’t 100% clear from the beginning. Russia invaded ukraine, and Ukraine has a right to defend itself. Therefore, Russia must vacate Ukraine before there can be peace or there will never be peace. Remember the appeasement of the Nazis and Fascists before WWII? We’ve already been through this with Russia and Crimea. If you keep letting them annex and invade sovereign nations they will just keep doing it.
So if you are really on the side of “peace” you must be on the side of Ukraine, and failure to acknowledge that is just equivocation.