Annihilation itself is no death to evil. Only good where evil was, is evil dead. An evil thing must live with its evil until it chooses to be good. That alone is the slaying of evil.
Ahmadinijad was stupid enbough to be a wolf in wolf's clothing, to expose his teeth and nails and alert the west. I can be a wolf in sheep's clothing. I have all the diplomatic and rhetoric skills to do so.