The Daily Beast has Peter Beinart's response to the recent Jonathan Rosen hatchet job on "The Crisis of Zionism" in the NYTBR. It's a level-headed reply, basically saying that Rosen did not properly review the book, with the opening salvo, "The telling thing about Jonathan Rosen’s New York Times review of my book, The Crisis of Zionism, is the lack of quotes. It’s much easier to turn a book into a cartoon when you ignore the text."
It's best to read the book and make your own judgment. To help with that, The Times of Israel has a substantial and interesting excerpt from the book.