I've come to a conclusion that, from the evolutionary standpoint, lying (and stealing) is one of the most important forms of the intelligent behavior. We see it in the animal world, so this unavoidably should be seen as such in the world of humans...
Surely no-one believes the CIA always behaves ethically. Especially after the post-9/11 kidnap, torture and murder rampage. Perhaps you meant a lot of people question if the CIA ever behaves ethically.