In discussing the 1977 Congressional testimony of defecting SRV official Nguyen Cong Hoan, on the subjects of mass repression and the abrogation of civic and religious freedoms, Herman and Chomsky pointed to contradictory accounts of post-war Vietnam, concluding that while "some of what Hoan reports is no doubt accurate ... the many visitors and Westerners living in Vietnam who expressly contradict his claims" suggest "Hoan is simply not a reliable commentator."