Asymetrical warfare. It doesn't matter who the offical orchestrators blame, they had their pre-scripted accomplices; nor does it matter if those they blame makes much sense. As long as the perpetrators are as ambiguous and widespread as possible, hence, Yinon Global War on Terrorism, you can attain the greatest pre-emptive response without as much pushback.

The agendas that the 9/11 event would initiate were multifaceted and soanned various idealogues and entities. Israel is said to work sometimes with Saudi Arabia but on the flip side, we understand that Israel actually wants to destroy parts of Saudi Arabia for the Greater Israeli project. The Likudniks Securing the Realm document written by neocons proves this. The 28 pages limited hangout is another example.

This is probably why the Saudi simulated hijackers (they never really hijacked the planes) were blamed while at the same time Bin Laden was blamed though he was an enemy of Saudi Arabia. Afghanistan and Iraq, though the later took other lies and pretexts, were time and time again said to be states that harbored terrorists that did 9/11.