author sinclaire lewis, aviator charles lindbergh, a young john f. kennedy and singer josephine baker to name a few. much has been written about american expatriots in paris and london between the wars but very little has been chronicled about these americans in berlin. former "newsweek" journalist and author andrew nagorski has set out to correct that with his new book "hitlerland: american witnesses to the nazi rise to power." it's the story of a handful of americans who were the first to take the measure of hitler and his followers, showing how difficult it is to see the future when caught up in the present-- even in the eye of the storm. i spoke with andrew nagorski about his book and the times. andy nagorski, thanks for joining us. >> thank you, margaret. >> warner: paint a picture for us, first of all, of berlin, in the '20s and '30s. as hitler was rising to power, what was it like... what was it like for the americans there? >> warner: first of all, you have to remember, this was a country, a city that was totally devastated after world war i.