In the positives, the detailed presentation of sources, so that the user can cross-reference the information or see more details. I also consider it positive that the author does not come to conclusions themselves, but presents the sources (even if they are contradictory) and allows the reader to come to their own conclusion based on the overall information. Obviously, reference could also be made to other documents (what a shame that in Greece the declassification of modern-era classified documents is still in its infancy) or interviews, but I focus on perhaps less well-known individuals who have not yet spoken about the subject... In any case, it is considered that it provides an excellent picture of the time period, I focus indicatively on the role of the CIA in relation to the policies of US government officials, we must always judge past events based on the then circumstances and not today's data...