His offer of to debate Obama could also be campaign posturing before the June 12 vote. But it does put Ahmadinejad on record as supporting a potentially groundbreaking encounter following Obama's offer for dialogue.
Ahmadinejad said that, if re-elected, he would be open to "debate global issues as well as world peace and security" during the U.N. General Assembly in September.
There was no immediate reaction from Washington.
On the nuclear issue, Ahmadinejad ruled out talks with the U.S. He said Iran's stand is "crystal clear" and Tehran would only discuss the subject within the framework of the U.N. nuclear watchdog, the International Atomic Energy Agency.
Iran's Ahmadinejad wants to debate Obama at UN
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