This is an excerpt from an article in Middle East Media
Research Institute report.  It is all about how the US is portrayed in Iran, by Ahmadinejad and by the press.  I haven't posted the whole article, which can be found here:  http://www.memri.org/report/en/0/0/0/0/0/0/4657.htm

This is the part of the article that concerns 9/11 and the problems with the official story given the world by the US government:

III. Accusing the U.S. of Carrying Out 9/11 Attacks