- NATO for a New Century: Atlanticism and European Security
- Atlanticism for a New Century: The Rise, Triumph, and Decline of NATO (Prentice Hall Studies in International Relations)
- War, Strategy and the Modern State, 1792 1914
- Political and Military Leadership in the World Wars: The Closest Concert
- The Trammels of Tradition: Social Democracy in Britain, France, and Germany (Contributions in Political Science)









