It doesn't really matter what the cause is or who did what or who "deserved" it. The sheer scope and magnitude of a nuke blots out anything else. I recommend you look up the film When the Wind Blows, which I believe is on YouTube now. It's an animated thing about a rural English couple and how their little world ends when their country is nuked. It is extremely tragic and grim and all too real, because it focuses on these people who could never have had a say in anything that happened to them and were victims of a system that never consulted them. Watching that film and then going to the national air and space museum and seeing the plane that dropped the bomb in real life shook me in a very real way when I realized the human cost of it all. The horror of it isn't that the agony it causes is unimaginable, but that it's completely real, that it has happened and could happen again to anyone or to everyone. I wouldn't wish it on my worst enemy.