The problem with MAD is that it only works with logical people. Once you include religious fanatics then they don't fear the destruction, in their warped sense

The problem with MAD is that it only works with logical people. Once you include religious fanatics then they don't fear the destruction, in their warped sense of reality their death just takes them to the next spiritual level (or whatever claptrap they preach). So they dont care if they are destroyed as long as their enemy is destroyed also. Because their enemy is some sort of heretic/unbeliever they will not be saved, whilst their people will all live happily in heaven because their god excuses genocide if you do it in HIS name.