Couldn't' stomach McNamara and Johnson's deliberate lies, half-truths, ineptness, and overall deceit they used to create a war in Viet Nam, so only read half the book and put it in the lending library kiosk across the street. I've read a great many books about the war, and was there voluntarily in '68-'69*, but "Dereliction of Duty" was the only one that detailed the almost daily shenanigans (in '64 and '65) the two conceived to keep the truth from the American people. I wasn't ignorant, not by a long shot, but it was much worse than I knew. Or could ever imagine.
*My love of country trumped crooked politicians and their arrogant and condescending advisors. I've no regrets.