Zachary Shore is the author of What Hitler Knew: The Battle for Information in Nazi Foreign Policy (Oxford University Press, 2003), and most recently Blunder: Why Smart People Make Bad Decisions (Bloomsbury, 2008).

In Erik Larson’s new book, In the Garden of Beasts, he tells the story of the Nazis terrifying rise to power through the eyes of the US ambassador, but he fails to ask crucial questions says Zachary Shore.