Colin S. Gray, professor of international politics and strategic studies at the University of Reading, England, and senior fellow at the National Institute for Public Policy, is the author of numerous books, including Modern Strategy and Strategy for Choos: Revolutions in Military Affairs and the Evidence of History. He lives in Berkshire, England.

"Argues that the United States is, and should continue to be, the world's guardian in the post-11 September 2001 world." - Proceedings "Highly recommended. This seminal work should be required reading for security policy practitioners." - Choice "Gray's warnings - and the parallel discussion of the prerequisites of effective policing - contain no small amount of wisdom." - International History Review"