Point of the book:

CIA is not very old.
CIA recruits assets instead of doing dirty work themselves.
CIA's charter includes directive to break laws of other countries.
CIA does a lot of sweeping to detect bugs.
CIA used to pull shenanigans but not anymore, except the Iran Contra thing which considering this book was written around 1991 really wasn't that long ago was it.
CIA gets screwed over by bureaucratic appointments.
CIA also gets screwed over by closed-minded shut-away inbreeding type thought process that would probably be easily cured if open to bureaucratic oversight.
CIA has infighting within its departments. and divisions. and there's infighting with the FBI. and the other something-teen other data/spy/federal law-enforcement agencies. They also fight with other countries in their spare time.
CIA doesn't assassinate people anymore.
CIA is friendly but confused with a sordid history that their working very hard to polish.

again written almost 2 decades ago.