When President Nixon finally turned over all the Watergate tapes to the special prosecutor, the tapes

One of the recordings had an unexplained gap of about eighteen and a half minutes, which became a major issue in the Watergate investigation. The gap was on a tape of a conversation between Nixon and H. R. Haldeman, and it was never satisfactorily explained. Thus, the tapes contained an important, unexplained gap—not proof that Nixon knew nothing or that executive privilege had been violated.

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