. >> host: we have been talking with chandra manning, co-director of the georgetown workshop in 19th century u.s. history. this is her book, "what this cruel war was over: soldiers, slavery and the civil war." professor manning, thank you for your time. >> guest: my pleasure. thank you very much. it was nice to talk to you. >> you're watching booktv on c-span2, 48 hours of nonfiction authors and books every weekend. >>> here's a look at a number of books that are being released this week. >> and now another interview from georgetown university. charles kupchan discusses his new book, "no one's world: the west, the rising rest and the coming global turn." the interview was conducted at riggs library on campus. >> host: you're watching booktv on c-span2, and we are at georgetown university interviewing some of their professors who are also authors. and now joining us is charles kupchan who is the author of this new book, "no one's world: the west, the rising rest and the coming global turn." it's published by oxford. professor kupchan, what do you mean by global turn? >> guest: by glob