Anwar al-Awlaki in Yemen, Oct. 2008. (Creative Commons)

"The Iranian government has professed on the tongue of its president Ahmadinejad that it does not believe that al Qaeda was behind 9/11 but rather, the U.S. government," wrote Abu Suhail, an opinion writer for the publication. "So we may ask the question: why would Iran ascribe to such a ridiculous belief that stands in the face of all logic and evidence?"

President Mahmoud Ahmadinejad delivered a speech at the United Nations last week in which he called the 9/11 attacks a mystery.

"Last year, when the need to form a fact-finding team to undertake a thorough investigation concerning the hidden elements involved in September 11 incident was brought up; an idea also endorsed by all independent governments and nations as well as by the majority in the United States, my country and myself came under pressure and threat by the government of the United States," said Ahmadinejad.

The comments prompted a walkout.

Inspire magazine is a product of Al Qaeda preacher Anwar al-Awlaki.

Al-Awlaki, 40, has been called the "bin Laden of the Internet" and linked to several terrorists, including Fort Hood shooter Nidal Hassan and Times Square bomber Faisal Shahzad.

"If Iran was genuine in its animosity towards the U.S., it would be pleased to see another entity striking a blow at the Great Satan but that's not the case. For Iran, anti-Americanism is merely a game of politics," the piece continues. "Iran and the Shi'a in general do not want to give al Qaeda credit for the greatest and biggest operation ever committed against America because this would expose their lip-service jihad against the Great Satan."

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