Udi Greenberg is an associate professor of European history at Dartmouth College. His first book, The Weimar Century: German Émigrés and the Ideological Foundations of the Cold War (Princeton, 2014), was awarded the Council for European Studies’ prize for best book in the field 2014-2015. He is currently working on a book-length project that explores the transformation of Catholic-Protestant relations in Europe in the nineteenth and twentieth centuries, from animosity to cooperation.