Here's an excerpt from the NYT story on Nixon's newly released grand jury testimony that will interest national security historians and send conspiracy theorists into orbit:

Despite the decades that have passed, some passages were redacted because they contained still-classified information. Nixon told prosecutors that “only if there is an absolute guarantee that there will not be disclosure of what I say, I will reveal for the first time information with regard to why wiretaps were proposed, information which, if it is made public, will be terribly damaging to the United States.” But his disclosure appears to have been cut from the transcript.