An overview of offense-defense theory, which argues that the relative ease of offense and defense varies in international politics.

Offense-defense theory argues that the relative ease of offense and defense varies in international politics. When the offense has the advantage, military conquest becomes easier and war is more likely; the opposite is true when the defense has the advantage. The balance between offense and defense depends on geography, technology, and other factors. This theory, and the body of related theories, has generated much debate and research over the past twenty-five years.This book presents a comprehensive overview of offense-defense theory. It includes contending views on the theory and some of the most recent attempts to refine and test it.

About the Author

Michael E. Brown is Dean of the Elliott School of International Affairs at George Washington University.

Owen Coté is Associate Director of the MIT Security Studies Program and Editor of the journal International Security.

Sean M. Lynn-Jones is Editor of International Security, the International Security Program's quarterly journal. He is also series editor of the Belfer Center Studies in International Security, the Program's book series that is published by MIT Press.

Steven E. Miller is director of the International Security Program at the Belfer Center.