James Corbett: The Unanswered Questions of 9/11?

In his latest weekly address to the nation, President Obama asserts that Americas questions about 9/11 have been answered. If only it were so! The questions of 9/11 have only continued to pile up higher since that fateful day, and despite official platitudes we are no closer to having those questions answered today than we were when they first arose. In fact, for some of the most important 9/11 questions, the government's own documents and records that could conceivably answer them have been destroyed, meaning we may never have answers: The unanswered questions of 9/11 are too numerous to enumerate, but they include: Why has NIST classified the data that they used to make their computer animation of the WTC7 collapse? Would knowledge of how NIST believes the building collapsed really jeopardize public safety? Why did the DIA destroy more than 2.5 terabytes of data on their Able Danger investigation that reportedly identified four of the alleged hijackers years in advance of the attack? Why did the Pentagon buy up and burn the entire first print run of Lt. Col. Anthony Shaffers book on the program? Why did the SEC destroy their records on the 9/11 insider trading question, presumably the most important investigation in the agency's history? Why did the alleged mastermind of 9/11, Khalid Sheikh Mohammed, confess not only to plotting 9/11 from A to Z, but also confess to masterminding numerous crimes that hew could not have committed? Why did Osama bin Laden repeatedly deny any involvement in the attacks until a series of mistranslated and otherwise manipulated videos came along, appearing to portray him as taking credit for those attacks? Why was the report of US State Department official Frank Taylor supposedly proving the case for Al Qaeda's role in 9/11, which NATO used to justify its invasion of Afghanistan, presented in a classified briefing? Why is that report still classified to this day?