He criticized the work of other writers with different views of the character of the Khmer Rouge, stating: "Both [François Ponchaud's and [John] Barron and [Anthony] Paul's books fail to measure up to even the minimum standards of journalism or scholarship, and their overall conclusions and general tone must be regarded as the product of overheated emotions and lack of caution. Moreover, there is enough evidence available from various sources, including material published by Ponchaud himself, to discredit the extreme thesis propounded by both books."Hearing Before the Subcommittee on Human Rights in Cambodia; The Vietnam Center and Archive
