"It turned out eventually that President Nixon had secretly been informed that I had copied material beyond the Pentagon Papers from his own National Security Council. He plausibly feared that I could reveal and document his secret threats to North Vietnam of escalations, including nuclear attacks, aiming essentially to win the war. To avert my possible exposure of his secret demands and threats—which had already prolonged the war for two years, widened it to Cambodia and Laos, and which would ultimately add twenty thousand American names to the Vietnam Memorial—he had set in motion a variety of criminal steps to keep me silent about his secret policy. These crimes against me—including warrantless wiretaps, burglary of my former psychoanalyst’s office seeking blackmail material, illegal use of the CIA, and an abortive effort to “totally incapacitate” me—when they were revealed, were a critical part of the impeachment proceedings that led to Nixon’s resignation, which made the war endable nine months later. Since these same crimes would have tainted a second prosecution for distribution of the Pentagon Papers, the Boston grand jury was abruptly terminated, and the second trial was averted."