Im not really sure how you think this is going to work. Do you think people like Putin care how many provincial kids he sends to their death? Maybe his oligarch buddies lay awake at night pondering the terrible human cost of their actions, considering all the compromises they might be willing to make in order alleviate this terrible suffering? Maybe the people of Moscow are just a few hundred thousand more pointless deaths away from saying enough is enough, and dragging their leaders into the streets?
Did you ever even watch A Taste of Armageddon? The whole point was that both sides were totally fine paying an unlimited number of lives for their eternal war. There is no magical number of human deaths that will bring peace.