Europe is facing unprecedented turbulence. This installment of the Monterey Conversations is not forcing any analogies between past and present. Instead, it takes up the subject of the First World War with an eye to its present-day salience. What might the origins of World War I tell us about the nature of conflict in Europe? How did the First World War become a world war in the first place? And how did World War I end - on the battlefield and at the diplomatic tables? What can we learn today from the elusiveness of order and the recurrence of disorder in Europe since 1914? To take up these questions we have two remarkable scholars, Margaret MacMillan, author of Paris 1919: Six Months that Changed the World and The War that Ended Peace; and Patrick Cohrs, author of The New Atlantic Order: The Transformation of International Politics, 1860-1933.