I haven't read the book and don't intend to read it, but it has been impossible to avoid hearing about it.
Last night I saw the very strange Mike Gravel suggesting something sinister about AIPAC's role in Kyl-Leiberman. The facts will dribble out, he said in a creepy, offhanded way to interviewer Ray Suarez. That was followed by a local reporter interviewing a red-faced Abraham Foxman who repeatedly used the words "bigot" and "antisemitism" while he insisted that critics of American policy on Israel are not subjected to unfair moral attacks.
Without a doubt, anti-Semites will be pleased by M&W's central claim that AIPAC exerts an outsized influence on American policy, but the habitual smear-and-destroy tactics employed by neocons and authoritarian conservatives leave me skeptical about the motivations underlying claims of antisemitism directed specifically toward Mearsheimer and Walt. Since the political right reflexively brands its political opposition with charges of intellectual, psychological or moral degeneracy, such charges tends to lose currency with reasonable people. Too bad the right has so cheapened the discussion in recent years that such a serious accusation must as a matter of course be taken with a very large grain of salt.