Who are the Good Guys in this War?

War has stirred much emotion and spewed many opinions dividing over the issue of the Russia/Ukraine conflict. What caused it? We tend to take sides over who is more right in fighting, or defending, according to the perception or bias you choose. Either way can we point to the good guy in all this? All sides have corrupt intent. We go over this ethical discussion to weight the claims as to whom has a more legit reason. Or maybe not...Here is The WHO Constitution mentioned:https://apps.who.int/gb/bd/pdf_files/BD_49th-en.pdf#page=6