On the shorter side, there is a very good article from the New Yorker which was published last October for the 75th birthday of the CIA entitled "Has the C.I.A. done more harm than good?" [1]
The journalist is clearly verging on the side of more harm.
To 95% of the mankind (cant believe i have to keep repeating this here, but folks here clearly think in US-only style often, regardless of their IQ, without realizing that what goes around comes around, without exception), CIA has definitely been a net loss and/or force of adding evil and fucking up entire vast regoins for generations, to exploit them easily later. There are so many stories out there, verified, even from their own people with some core moral values, its ming-boggling and definitely easier to just ignore to avoid depression.
Maybe some good is currently being done on Ukraine, but that would be just because russian top management is a pile of amoral dictatorial shit that is actually more stupid and more aggressive (which is always a very dangerous mix, especially with all those natural resources needed everywhere) than everybody thought. But thats just to subvert and bleed an old adversary for future power games, not some altruism. Real help would be much quicker to deliver and definitely possible, now its just as fast that Ukraine side doesnt collapse from lack of armaments and russians bleed people and resources for as long as possible.
The journalist is clearly verging on the side of more harm.
[1] https://www.newyorker.com/magazine/2022/10/10/has-the-cia-do...