This belongs with the group of current war books (pages 464-465). It was written, after long study, before the war was launched, and already some of the facts he presents, some of the theories he puts forward are either sustained or controverted. Much of today's war will be decided on the sea, so this clear presentation of the sea power of all the countries involved, directly or indirectly, should be a useful record. It is a technical study of tactics and strategy; there is specific information as to how strong each country is, with lists of types of ships. Valuable reference material, ably presented.