Mark Steyn has a scathing observation on the CIA's competence, as revealed in the infamous August 2001 Presidential Baily Briefing:
So that is the Agency's summation on Osama bin Laden as it stood in August 2001: two old television interviews, two generalities from foreign agencies, one rumour from the late 1990s, and a concluding assertion that demonstrates the CIA doesn't even know what the FBI's doing, never mind anybody else. Hard to see why it was ever "classified", as you could have picked 99 per cent of it from your daily newspaper. This would just about pass muster for an intelligence briefing in a small nation with no role in the world - Luxembourg, say. But, assuming that Luxembourg has an intelligence service, I'll bet it's paying a lot less for it than America is.