The point of the conventions is sort of a mutual aid that encourages nations to abide by rules of war. It is not a right in any real sense, nor does it mean one

The point of the conventions is sort of a mutual aid that encourages nations to abide by rules of war. It is not a right in any real sense, nor does it mean one side must always act ethically to the other side which ignores and flouts it. Essentially its a gentleman's agreement, and is as binding as one of those. Once one side breaks it, I don't think treating them like they haven't is proper.