Wells College in the context of Aurora, Cayuga County, New York

Leslie Rogne Schumacher, FRSA, FRHistS is an American historian, writer, and professor of international relations. He teaches at Harvard Kennedy School and is a Faculty Affiliate in the school's Belfer Center for Science and International Affairs as well as an Associate in Harvard's History Department. He also holds research posts at the Mario Einaudi Center for International Affairs at Cornell University and the Foreign Policy Research Institute. He was the fourth David H. Burton Fellow at Saint Joseph's University. He later served as Wells College's Director of the Intelligence Community Center for Academic Excellence, funded by the US Office of the Director of National Intelligence. He has taught at the Lauder Institute of Management & International Studies (a part of the Wharton School at the University of Pennsylvania), and he previously served on the faculty of the Sant'Anna Institute in Sorrento, Italy.

Schumacher publishes in the fields of Mediterranean studies, British history, diplomacy and international relations, intelligence and national security, and migration studies. He frequently collaborates with fellow Mediterranean scholar Andrekos Varnava, Editor-in-Chief of the Journal of Imperial and Commonwealth History. In honor of his book on the Eastern Question, Great Powers diplomacy, Victorian politics and society, and British imperialism, titled The Eastern Question in 1870s Britain: Democracy and Diplomacy, Orientalism and Empire (2023), he was elected a Fellow of the Royal Historical Society in 2024. His work on nationalism and the history of European integration theory features in graduate programs in Middle East studies, imperialism, and the European Union. He is a member of the advisory board of the Marmara Journal of European Studies and the editorial board of Akropolis: Journal of Hellenic Studies. He has served on the board of the scholarly organization Britain and the World, including as Vice-Chair.