Cyber is arguably the most complicated as well as the most important arena of conflict the U.S. faces today, and the second edition of Martin Libicki's Cyberspace in Peace and War is an indispensable guide to it, separating the hype from the real threats and choices. Updated from the first edition, it tells us where we are and where we are likely to go." —Robert Jervis, author of How Statesmen Think: The Psychology of International Politics"Libicki's updated master class on the foundations, implications and import of cyberspace delivers the breadth of an encyclopedia and the accessibility of a personal guide within a context of forward-looking strategy. Covering technology, human factors and doctrine in equal measure, Libicki delivers a book that the reader can employ as a ready reference to assist in navigating the complex landscape of strategy and policy for a domain on which all others depend." —Chris Inglis, former deputy director, National Security Agency"The first edition of this book was a masterfully comprehensive, penetrating, and deeply informative introduction to all dimensions of cyber conflict, which has rapidly emerged as the dominant strategic arena of the 21st century. This new edition not only updates but improves the book's achievements." —Richard K. Betts, Columbia University, author of Enemies of Intelligence and American Force