Agreed, the war could have been avoided, Russia doesn't invade a soveriegn country and start an illegal war, no death and destruction.Mariupol was only the first one to go, you keep ignoring the fact that this war could have been avoided, all the death and destruction could have been avoided.
Instead you are playing the compassion card, where was your compassion when US destroyed Baghdad, and killed millions in Iraq , libiya, and threw entire middle east in to chaos ?