Best to examine them outright:
The CIAs Biggest Bloopers – Fact Checker
So the CIA got it wrong on Irans nuclear program in the last National Intelligence Estimate, back in 2005. But does that mean they have got it right this time? Not necessarily. The history of the CIA is littered with spectacular intelligence mistakes. Sometimes, the correction of one error can lead to a new error, as analysts atone for past mistakes by moving too far in the opposite direction.In the spirit of caution and skepticism, here is the official Fact Checker list of the CIAS Biggest Bloopers, over six decades of intelligence-gathering. I have compiled it with the assistance of researchers at the indispensable National Security Archive, a non-profit group that has published more than half a million government documents. A disclaimer: the Agency has had some successes too, but I will let their public relations operation draw up that particular list.