At Newsmax, Ken Timmerman is asking:

In an auspicious passage that went virtually unreported at the time, the 9/11 Commission revealed in July 2004 that they “now have evidence suggesting that 8 to 10 of the 14 Saudi ‘muscle’ operatives traveled into or out of Iran between October 2000 and February 2001.”
The “muscle” operatives were the 9/11 hijackers who overpowered airline crew members, slit their throats, and terrorized passengers so the al-Qaida pilots could seize control of the airliners and fly them into their targets.
The Commissioners concluded that there was “strong evidence that Iran facilitated the transit of al-Qaida members into and out of Afghanistan before 9/11, and that some of these were future 9/11 hijackers.”
“We believe this topic requires further investigation by the U.S. government,” the Commissioners wrote.
This heavily-redacted passage in the July 2004 final report of the 9/11 Commission provided a tantalizing glimpse into the information gathered by the U.S. intelligence community — mainly from national technical means — on Iran’s material involvement in the 9/11 attacks.
And yet, until now it has been widely ignored by the intelligence community, Congress, and most of the press.
I first revealed the inside story of what the 9/11 Commission found out about Iran’s involvement in the 9/11 plot in my 2005 book Countdown to Crisis: the Coming Nuclear Showdown with Iran.
Among other things, I discovered from sources on the Commission that the “senior Hezbollah operative” who accompanied the al-Qaida muscle hijackers on flights from Saudi Arabia and Beirut to Tehran was none other than Iran’s star terrorist, Imad Fayez Mugniyeh.
Either Mugniyeh’s presence on those flights was hard evidence that Iran was actively and materially involved with the future al-Qaida terrorists, or it was a “remarkable coincidence,” the 9/11 Commission report stated.
I also interviewed a former Revolutionary Guards Colonel who gave paramilitary and intelligence training to al-Qaida terrorists at a specialized training camp in Iran before 9/11.