As you can see, there are pages that have been redacted — in declassification terms, that means “censored.”  Sometimes material is redacted because it might compromise other sources or methods of intelligence collection. For example, maybe the name of an informant is mentioned in an intelligence report, and revealing the person’s name might put him or her in danger. Or information might be blanked out that could reveal to an adversary nation that we knew something about that nation’s military or government that we didn’t want them to know we knew. There are many other reasons for censoring parts of declassified documents. Why these particular pages in this session were redacted is unknown.