Coitenly!
I'm just trying to get a good handle on it myself, and I've really only talked much about it a few times with a relatively small group of people (of extremely polarized perspective). I guess I'm potentially open to LIHOP possibilities, but it would have to be supported by a lot of direct evidence that I haven't seen, yet. I would have to place these at the extreme edge of possibility, at least from my current position. I tend to be much more open to crimes of negligence, carelessness and arrogant incompetence, rather than deliberate and calculated treason and murderous tyranny,...but, I've been wrong in this respect with regards to this administration before, so I guess it wouldn't destroy any precious world-models if I were presented with hard evidence compellingly indicating either LIHOP or MIHOP, but it would take quite a bit of unambiguous, compelling, empiric evidence to get me to accept that.
But yeah, LIHOP or MIHOP, extremely unlikely, I could be dragged to the possibility, but it would require unambiguous hard evidence before I'd begin upgrading potential of "likely."
The attacks of 9/11 planned and executed by al Qaeda extremists. The damages fully consistent with crashes and fires.
Political elements within the government negligent, careless and arrogantly incompetent prior to attacks, and acting with opportunistic manipulation, extreme overreach, and tyrannical entitlement to promote self-serving, nation neglecting/damaging goals after, and in response to, the attacks.
Oh well, guess that helps me to sort things out a bit.