Sam Tanenhaus writes:
To Oppenheimer’s credit, his own politics, which seem somewhere on the left, don’t intrude on the absorbing stories he tells. He begins with the ex-Communists Whittaker Chambers and James Burnham, then discusses two renouncers of liberalism, Ronald Reagan and Norman Podhoretz, and closes the circle with two casualties of the ’60s–’70s radical left, David Horowitz and Christopher Hitchens.