Later, he co-wrote The United States in Vietnam (Kahin & Lewis 1969) with Stanford professor John Lewis, a publication which helped to turn people in academia against U.S. intervention in Vietnam.
Kemudian, ia menulis The United States in Vietnam (Kahin & Lewis 1969) dengan profesor dari Stanford, John Lewis, sebuah publikasi yang membantu mengubah pandangan orang-orang di dunia akademik terhadap intervensi AS di Vietnam.