A legalistic analysis for lawyers -- statesmen -- rather than for the general reader, as a Professor of the Harvard Law School applies his knowledge of the highly complex mechanism of international law to the equally complex subject of the prosecution of the Nazis after the war. He presents -- for consideration -- certain problematical factors; what is legitimately a war crime; what type of offense requires national -- or international -- jurisdiction; is the individual responsible -- the subordinate; what type of court may issue judgment; what type of penalty can be imposed? He uses historical data from the last war when six of our 890 accused were convicted at the Leipzig trials. He defines the war criminal -- the types of tribunals -- the liability of heads of state -- the doctrine of act of State used as a defense to acquire immunity for the culprit; the problems of the capture of the accused. Although he believes that large scale extermination is neither desirable nor possible, he does believe that retribution should be imposed first, and therapeutic correction second and only in individual instances. Interesting but limited.