Senator Daniel Patrick Moynihan , chairman of the bipartisan Commission on Protecting and Reducing Government Secrecy, here presents an account of the development of secrecy as a mode of regulation in American government since World War I - how it was born, how world events shaped it, how it was adversely affected political decisions and events, and how it has eluded efforts to curtail or end it. Senator Moyhihan begins by revealing the story of the Venona project project, in which Soviet cables sent to spies in the United States during World War II were decrypted by the US Army - but were never passed in to President Truman. The divisive Hiss perjury trial and the McCarthy era of suspicion might have had a far different impact on American society says Moyynihan, if government agencies had not kept secrets from one another as a means of shoring up their power. Moynihan points to many other examples of how government bureaucracies used secrecy to avoid public scrutiny and got into trouble as a result. He discusses the Bay of Pigs, Watergate, the Iran-Contra affair, and finally, the failure to forecast the collapse of the Soviet Union, suggesting that many of the tragedies resulting from these events could have been averted had the issues been clarified in an open exchange if ideas.