Robert Gerwarth, a professor of modern history at University College Dublin and Director of its Centre for War Studies, examines the legacy of World War I in his new book, The Vanquished: Why the First World War Failed to End. Saul Friedländer, award-winning Israeli historian and professor of history at UCLA, on his new book, Where Memory Leads: My Life. Journalist Sheri Fink investigates the ineffective psychiatric services available to detainees at Guantánamo. David Oshinsky offers a detailed history of the nation's oldest public hospital in Bellevue.