This book examines how the liberal international theory tradition evolved in Europe. It includes nine chapters focusing on both historical and contemporary branches of liberal IR theorizing. The combined portrait of the prominent IR theory orientation shows a long and rich theoretical tradition but also a tradition that the scholarly community rarely fully recognize. It is currently somewhat challenged and therefore in need of further advances. Concerning the historical branches, the authors present a truly European tradition that thus was not only present in a few countries. The contributors introduce examples of liberal theorizing that IR scholars tend to dismiss and they trace the boundaries between the liberal and other theoretical traditions. Given the prominence of the tradition, the book is surprisingly among the first to present a transnational perspective on the development of the liberal international theory tradition in Europe.

Knud Erik Jørgensen is Professor of International Relations at Aarhus University, Denmark. He has held previous appointments as a Jean Monnet Fellow at the European University Institute in Florence, Italy and with Yäar University in Izmir, Turkey. 

1.Introduction: The Liberal International Theory Tradition in Context, Knud Erik Jørgensen.- 2.Liberal IR Theorizing During the Early Twentieth Century: 1900-1939, Lacin Idil Özt¿g¿.- 3. Liberalism and Domestic Politics Approaches in IR, Aukje van Loon.- 4. Republicanism and Liberal International Theory,  Kevin Blachford.- 5. Liberal European Peace Theories and Their Critics, Lothar Brock and Hendrik Simon.- 6. Liberal Security Theories, Kamil Zwolski.- 7. When Liberalism Meets the English School, F. Asli Ergul Jorgensen.- 8. Classical Liberalism and IR Theory, Edwin van de Haar.- 9. Conclusion and Perspectives, Knud Erik Jørgensen.