Yes, search what he said.. should heelp
The answer is "wanting to disguise the truth they have uncovered."
Some historians find this tough. One of the reasons would be because not all people may or may not, like the truth. Some historians would omit some part of the truth to keep violent reactions from the readers or outsiders.
The Indian Ocean, Atlantic is to the West
His desire to protect south vietnam in the war as they reached the modernized stage of their economic growth.