UPDATE: I don't know if the book is out-out, or coming out in a few days.
From TIME:
the book also argues that the NSA's eavesdropping policy shows the extent to which the war on terrorism has spurred the intelligence community to flout legal conventions at home and abroad. Risen's chief target is the CIA, where, he argues, institutional dysfunction and feckless leadership after 9/11 led to intelligence breakdowns that continue to haunt the U.S....(Hat tip to E&P)
Risen writes that with the White House's anything-goes mandate in place, everything went. While the NSA began monitoring communications of some Americans suspected of links to al-Qaeda--snooping on "millions of telephone calls and e-mail messages on American soil" in the process--the CIA set up a network of secret prisons around the world in which interrogators employed techniques that violated established international norms. Meanwhile, Tenet's desire to earn the favor of Bush, Vice President Dick Cheney and Defense Secretary Donald Rumsfeld led him to abandon the agency's traditional role as a nonpartisan arbiter of intelligence. That fostered a climate in which officials were discouraged from sending Bush inconvenient information--such as doubts about the quality of intelligence on Iraq's program for weapons of mass destruction (WMD). Tenet is no stranger to opprobrium (his reputation will never recover from his telling Bush that the evidence on WMD was a "slam dunk"), but the verdict of his subordinates in State of War is particularly withering.