Six questions posed and in the last states - on general national policy, not the art of interrogation:
Frankly, I believe the main reason is that many people in the government have been sincere but deluded in their perceptions and actions in the “War on Terror.” I wrote my book because I was so distressed by so many aspects of the case: our erroneous and dangerous exaggeration of the terrorist threats facing us; what we have done to ourselves, our society, and our laws with our interrogation programs during the “War on Terror;” how our views about acceptable behavior have become coarser; our freedoms compromised unnecessarily; and how we unjustly kept a largely innocent man in prison for years, it seems, so as to bury in a dungeon the dark multiple, egregious errors.
Link:http://harpers.org/archive/2011/07/hbc-90008139

The second article is concerning with redactions made to the bbok at CIA insistence:http://www.harpers.org/archive/2011/07/hbc-90008135