The New Yorker’s Jane Mayer takes a close look at Marc Thiessen’s book, Courting Disaster, and finds polemics but not much truth. “Thiessen is better at conveying fear,” she concludes, “than at relaying the facts.”

His account of the foiled Heathrow plot, for example, is “completely and utterly wrong,” according to Peter Clarke, who was the head of Scotland Yard’s anti-terrorism branch in 2006. “The deduction that what was being planned was an attack against airliners was entirely based upon intelligence gathered in the U.K.,” Clarke said, adding that Thiessen’s “version of events is simply not recognized by those who were intimately involved in the airlines investigation in 2006.” Nor did Scotland Yard need to be told about the perils of terrorists using liquid explosives. The bombers who attacked London’s public-transportation system in 2005, Clarke pointed out, “used exactly the same materials.”

Thiessen makes no bones about the fact that his aim is to show the central role played by the CIA and its use of torture techniques in keeping the country safe during the Bush stewardship. He says he was introduced to the subject when he got the task of drafting a speech that Bush ultimately delivered in September 2006, closing down the black site system and acknowledging use of what the Bush team called “enhanced interrogation techniques,” but offering a robust swan-song defense of what had been done. Thiessen says he relied heavily on information furnished by Michael McConnell—Bush’s national intelligence tsar. But Mayer quickly zeroes in on the information gap that this sets up:

Courting Disaster has a scholarly feel, and hundreds of footnotes, but it is based on a series of slipshod premises. Thiessen, citing McConnell, claims that before the C.I.A. began interrogating detainees the U.S. knew “virtually nothing” about Al Qaeda. But McConnell was not in the government in the years immediately before 9/11. He retired as the director of the National Security Agency in 1996, and did not rejoin the government until 2007. Evidently, he missed a few developments during his time in the private sector, such as the C.I.A.’s founding, in 1996, of its bin Laden unit—the only unit devoted to a single figure. There was also bin Laden’s declaration of war on America, in 1996, and his 1998 indictment in New York, after Al Qaeda’s bombing of two U.S. embassies in East Africa. The subsequent federal trial of the bombing suspects, in New York, produced thousands of pages of documents exposing the internal workings of Al Qaeda. A state’s witness at the trial, a former Al Qaeda member named Jamal al-Fadl, supplied the F.B.I. with invaluable information about the group, including its attempts to obtain nuclear weapons.

Thiessen insists that techniques that have been viewed as torture since the time of the Inquisition—such as waterboarding, the strapado, and hypothermia—are miraculously transformed into something milder and less offensive in the hands of the CIA. And he struggles to present the CIA’s use of torture techniques as an unqualified success. For instance, he insists that the CIA’s practices had nothing to do with the disaster at Abu Ghraib, but Mayer catches him up in another falsehood:

Courting Disaster downplays the C.I.A.’s brutality under the Bush Administration to the point of falsification. Thiessen argues that “the C.I.A. interrogation program did not inflict torture by any reasonable standard,” and that there was “only one single case” in which “inhumane” techniques were used. That case, he writes, involved the detainee Abd al-Rahim Nashiri, whom a C.I.A. interrogator threatened with a handgun to the head, and with an electric drill. He claims that no detainee “deaths in custody took place in the C.I.A. interrogation program,” failing to mention the case of a detainee who was left to freeze to death at a C.I.A.-run prison in Afghanistan. Referring to the Abu Ghraib scandal, Thiessen writes that “what happened in those photos had nothing to do with C.I.A. interrogations, military interrogations, or interrogations of any sort.” The statement is hard to square with the infamous photograph of Manadel al-Jamadi; his body was placed on ice after he died of asphyxiation during a C.I.A. interrogation at the prison. The homicide became so notorious that the C.I.A.’s inspector general, John Helgerson, forwarded the case to the Justice Department for potential criminal prosecution. Thiessen simply ignores the incident.

Mayer concludes her piece with some well-honed advice for the Obama Team:

Thiessen’s effort to rewrite the history of the C.I.A.’s interrogation program comes not long after a Presidential race in which both the Republican and the Democratic nominees agreed that state-sponsored cruelty had damaged and dishonored America. The publication of “Courting Disaster” suggests that Obama’s avowed determination “to look forward, not back” has laid the recent past open to partisan reinterpretation. By holding no one accountable for past abuse, and by convening no commission on what did and didn’t protect the country, President Obama has left the telling of this dark chapter in American history to those who most want to whitewash it.