Part of understanding 9/11 is appreciating the geopolitical motives of those who foster this kind of activity. The thesis that puts this with the neo-cons still mistakes the surrogates for the chief actors. This is not about some kind of cabal meeting in secret by the way, but simply about observing shared motives that occasionally collude. The real driver is financial (follow the money) and involves an effort to completely free Multinational Corporations from any influence by Nation States. This is inherent in the structure and culture of corporations as social entities (a longer story), but represents a kind of survival of the fittest gesture. Since the bottom line and due diligence obligations drive corporate managers to certain kinds of actions, there isn't any way for them to continue to develop in this direction (toward a kind of coming economic feudalism), but to try to control governments, use other peoples money (taxpayers to fund military research and pay for professional private armies etc.) and similar actions.

Corporations compete in an environment that includes retarded social forms (dictators, tribal based and/or religious based governments etc.). Again, survival requires base actions (subverting governments, paying bribes, spying etc.), actions which the Nation States have traditionally done.

The reason this is important, is that not only must the truth of 9/11 come out, but we must, as citizens of a Nation State that we want to continue to survive, understand the rules of the game being played, in order to act properly. 9/11 is simply one battle in a war that's been going on for centuries. We need to keep it in that true context, or loose sight of the real goals, which is not just the truth, but what to do about how it happened in the first place.