Westmoreland's view has been heavily criticized by Nick Turse, the author of the book "Kill Anything That Moves: The Real American War in Vietnam". Turse said that many of the Vietnamese killed were actually innocent civilians, and the Vietnamese casualties were not just caused by military cross-fire but were a direct result of the U.S. policy and tactics, for example the policy "kill everything that moves" which enabled the U.S. soldiers to shoot civilians for "suspicious behavior". He concluded that, after having "spoken to survivors of massacres by United States forces at Phi Phu, Trieu Ai, My Luoc and so many other hamlets, I can say with certainty that Westmoreland's assessment was false". He also accused Westmoreland of concealing evidence of atrocities from the American public when he was the Army Chief of Staff.