Document. General article on the current problems of the Vietnam war. Mr. Zahn addresses the pacifists' point of view and warns that those who are making threats of violence should be taken at face value. He discusses the recent killing at the University of Wisconsin and states that he is not suggesting a joining of forces like that of the Agnews or Mitchells, but that principles and limits must be made clear. ~ COMMONWEAL ~ 10/23 ~ Article appears on pages 84 and 85. The document contains pages 83-86.