Why were the 911 tapes destroyed?

An article by Paul Craig Roberts.

"Did they reveal the absence of confessions?"

snip/
"In their book, Kean and Hamilton wrote that they were unable to obtain "access to star witnesses in custody who were the only possible source for inside information about the 9/11 plot."

The only information the commission was permitted to have about what was learned from interrogations of alleged plot ringleaders, such as Khalid Sheikh Mohammed, came from "thirdhand" sources. The commission was not permitted to question the alleged plotters in custody or even to meet with those who interrogated the alleged plotters. Consequently, write Kean and Hamilton, "We had no way of evaluating the credibility of detainee information" that was fed to them by third party hands. "How could we tell if someone such as Khalid Sheikh Mohammed was telling us the truth?"

The fact that video tapes of the interrogations existed was kept secret from the 9/11 Commission.

The video tapes have since been destroyed. The destruction of the videos has become an issue because of White House involvement in the decision to destroy the tapes and because the videos are believed to have been destroyed because they reveal methods of torture that the Bush administration denies using."
link :hi:

...destroying the tapes, but their reasons for making sure they never see daylight would almost certainly be related to the indefensible, interrogation (torture) techniques they employ.

This is obstruction, both the 9-11 Commission Chairs have said so, we're way overdue for some accountability.