President Ahmadinejad NEVER said that Israel should be wiped off the map. That's a lie which spread all over the news and Internet. This is what he said:
"The Imam said this regime occupying Jerusalem must vanish from the page of time."
I'm going to give you a link to the website that details what he said. It's not a conspirator website or anything like that, but it does have some very interesting and well-researched information. May I suggest you investigate further.
http://www.antiwar.com/orig/norouzi.php?articleid=11025