The Wikipedia article raganwald kindly linked to has an archived set of talk pages that go on almost endlessly, as the article has long been the subject of edit-warring. That article and related pages have been the subject of an Arbitration Committee case (opened at about the time I became a wikipedian, by coincidence)
with ongoing administrative sanctions. In other words, I'm not sure if the article is currently in good enough shape to recommend. The Wikipedia user bibliography "Intelligence Citations"