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"To me, those theories are implausible and absurd. Ours is not a government with the skill and ability to pull such a thing off."
So the United States, the country that developed nuclear and thermonuclear weapons, that beat the Russians, landed on the moon, invented the light bulb, et al, could not have managed a Project Northwoods II. But... a guy in a cave, with the help of 19 stripper loving Islamists, most of whom could not fly a plane, could take down NORAD and blow up WTC 1, 2, 7 and the Pentagon.
Tell me what you believe, but don't tell me that the idea that elements within your government were not capable of doing this, but Bin Laden was.