The second link above (시사저널; 2020.2.8. 김형욱은 내가 죽였다.) is more interesting to me.

In my early days in the U.S., I read the book by 김형욱 (written by another person in Korean language)

about himself, 516, and other political events in Korea, eventually leading to his escaping to the U.S.

Not like any other books or stories, Kim's book left a deep impression in my brain.

It was a truly interesting book. 김형욱 really believed that President Park was a communist

and, actually, Park might have been a communist at a certain time because of his family background.

박정희 eventually might have turned into an anti-communist.

A communist or not, he worked for South Korea. It didn't really matter.

Even if he was a communist, he would not have sold South Korea to the North Korean regime

because he knew that he, certainly, would have been killed by the North regime.

He was smart enough to know, not like the current leftists and the Moon's people in South Korea.

President Park was a smart guy, smart enough to bring South Korea into the world stage.

Thinking back, any ordinary Korean politicians could not have achieved such a miraculous task.

You can see "how and why" when you look into and compare him to all the dictators of the world.

I can justify the assassination of 김형욱. Sorry to say if Kim hears me now.

It was a good thing that he was not a part of Park's regime.

If he was a part of it, South Korea might have had a different tragic path.

Nobody can tell what would happen to South Korea if Park was not killed by another Kim.

There might be a chance that Park might have gone into the routine corruption.

You never know !!

Walking out of the theater, I told my wife, " You know what, 김재규, perhaps, saved a 

few millions of lives in 부산 and 마산". In the movie, 차지철 said to Park, " In Cambodia,

they killed 2-3 million. Why don't we do that." when 김재규 was reporting the status of 부-마 사태.

Park was obviously corrupted and 차지철 was a greedy son of a beech.

김재규 knew U.S. did not want Park to be in power.

Park betrayed him even though he took care of 김형욱.

The fate of former KCIA heads had ended when they had done the crucial

bad acts that helped Park to get over the crises. 김재규 was threatened and angered at that point.

I think he was compelled to do something to remove Park from the presidency, but

he did not know exactly how. In the end, the half-cooked coup had failed him badly.

It became Chun's opportunity.