According to Norman Sherry 's authorized biography of Greene The Life of Graham Greene ( Penguin , 2004 ) , Lansdale did not officially enter the Vietnam arena until 1954 .
Greene The Life of Graham Greene wrote Greene The Life of Graham Greene 's book in 1952 after departing Vietnam .
According to Norman Sherry 's authorized biography of Greene The Life of Graham Greene ( Penguin , 2004 ) , Lansdale did not officially enter the Vietnam arena until 1954 , while Greene wrote his book in 1952 after departing Vietnam .