Admiral Biorklund makes an expert contribution to a full appreciation of the primary question of the day. He feels that it is unrealistic to attempt a total prohibition of atomic weapons. But it is not therefore necessary to sit with folded arms. By starting with what is politically possible now, he outlines a solution which recognizes that the smaller tactical weapons would have to be tolerated while the heaviest bombs are strictly controlled. Clearly written, his book is extremely readable and of absorbing interest. It presents, soberly and objectively a great deal of information in a readily assimilable form. A large map (available online) plots the position of the world’s fissile material (uranium, thorium, lithium, etc.). Assessing every known scrap of information, it has been the most complete map yet published.