Iran's President, Mahmoud Ahmadinejad has criticized the structure of the United Nations...I think this speech is a public diplomacy measure and...for the most part they will have an influence among their audience that they are directed at.

The Wall Street Journal
Consider, then, the "public diplomacy" impact of a serious public offer to Iran, made through international media and from the podium (so often usurped by the clownish Mahmoud Ahmadinejad) of the United Nations.