Democracy and Class Struggle says an understanding of Gladio B is essential to understand the background to the 911 events.
Operation Gladio B was an FBI codename adopted in 1997 for relations between US intelligence, the Pentagon, and Al Qaeda.
The name refers to the original Operation Gladio, in which US intelligence had relations with anti-communist groups in Europe.
According to Sibel Edmonds, Gladio B identified, among other things, meetings between US intelligence and Ayman al-Zawahiri in Azerbaijan between 1997 and 2001, with al-Zawahiri and other mujahideen being transported by NATO aircraft to Central Asia and the Balkans.
These and related allegations were confirmed by Sunday Times journalists in 2008 by speaking to Pentagon and MI6 sources; however the journalists were prevented from publishing these allegations when the second half of their 4-part series was dropped.
For the Turkish Film Valley of the Wolves mentioned in Part 3 see here: