One is impressed by how much Bracken, dealing with a critical subject that has received little analysis in the non-classified literature, is able to say in this important book. The dependable command and control of nuclear forces, involving such questions as how to assess warning signs or how to assure the proper management of nuclear forces during a military alert, is obviously second to nothing in importance. In a war each side would seek to destroy the others communications nets and command systems. This is a sophisticated but also a readable book which helps fill a major gap.