When reading books written in the imperial core, about the enemies/targets of imperialist nations, I would keep this in mind:

Former CIA case officer John Stockwell: Well for example, in my war, the Angola war, that I helped to manage, one third of my staff was propaganda. [...] We would take stories which we would write and put them in the Zambia Times, and then pulled them out and sent them to a journalist on our payroll in Europe. But his cover story, you see, would be what he had gotten from his stringer in Lusaka, who had gotten them from the Zambia Times. We had the complicity of the government of Zambia, Kenneth Kaunda if you will, to put these false stories into his newspapers. But after that point, the journalists, Reuters and AFP, the management was not witting of it. Now, our contact man in Europe was. And we pumped just dozens of stories about Cuban atrocities, Cuban rapists--in one case we had the Cuban rapists caught and tried by the Ovimbundu maidens who had been their victims, and then we ran photographs that made almost every newspaper in the country of the Cubans being executed by the Ovimbundu women who supposedly had been their victims.

Interviewer: These were fake photos?

Stockwell: Oh, absolutely. We didn't know of one single atrocity committed by the Cubans. It was pure, raw, false propaganda to create an illusion of communists, you know eating babies for breakfast and the sort. Totally false propaganda.

Interviewer: John, was this sort of thing practiced in Vietnam?

Stockwell: Oh, endlessly. A massive propaganda effort in Vietnam in the '50s and in the '60s, including the thousand books that were published--several hundred in English--that were also propaganda books sponsored by the CIA. Give some money to a writer, "Write this book for us, write anything you want, but on these matters, make sure, you know, you have this line."

Interviewer: Writers in this country? Books sold and distributed in this culture?

Stockwell: Sure. Yeah. English language books, meaning an American audience as a target, on the subject of Vietnam and the history of Vietnam, and the history of Marxism, and supporting the domino theory, et cetera.

Interviewer: Without opening us up to a lawsuit, could you name one of them?

Stockwell: No, I could not. The Church Committee, when they found this out, demanded that they be given the titles so that the university libraries could at least go and stamp inside "Central Intelligence Agency's version of history," and the CIA refused because it's been commissioned to protect its sources and methods, and the sources would be the authors who wrote these false propaganda books, some of whom are now distinguished scholars and journalists.

Source (video interview)

Also note:

• It's a recognized problem in south Korea that "time and time again, conservative outlets and foreign media circulate and reproduce rumors [about DPRK] based on questionable sources ... retractions and apologies are rarely ever provided when the reports are shown to be false" and "Sometimes, the South Korean government itself has been the epicenter of false reports ... The situation has been made worse by defector groups aggressively proliferating claims from unverified 'North Korean sources,' as if attempting to draw attention to themselves."

• South Korea's national intelligence service (NIS) forges documents to frame people and tortures them into false confessions as well as pays defectors for sensational stories and harasses and silences people who say positive things about DPRK (and takes away their passports so they can't go back, even when they came to south Korea against their will)

• UN human rights researchers who have worked directly with defectors from DPRK have written about how testimonies are made unreliable by cash incentives paid by the NIS and other organizations: "North Korean refugees are well aware of what the interviewer wants to hear. ... The more terrible their stories are, the more attention they receive. The more international invitations they receive, the more cash comes in. It is how the capitalist system works: competition for more tragic and shocking stories. ... In my 16 years of studying North Korean refugees, I have experienced numerous inconsistent stories, intentional omission and lies. I have also witnessed some involved in fraud and other illicit activities. In one case the breach of trust was so significant that I could not continue research."

Edit: So, to summarize -- Former CIA case officers have discussed how they pay academics and journalists to write thousands of books about foreign communist enemies that contain whatever content the author wants as long as it pushes certain specific lines; the CIA regularly plants false stories into foreign newspapers and gets them circulated around; the NIS (formerly the "KCIA", formed on the US-backed side during the Korean War to combat communists) is known to forge documents, extract false confessions, pay people to lie or embellish to the point that mainstream south Korean liberal media and UN researchers say it's making it too hard to tell what's true; defectors with sensational stories receive payments and get book deals and international speaking tours while people with positive things to say get arrested and surveilled by intelligence agencies...So, keep that info in mind as you consider what's going on with these books.