The attack in Benghazi, Libya, that killed Ambassador J. Christopher Stevens and three other Americans has dealt the Central Intelligence Agency a major setback in its intelligence-gathering efforts at a time of increasing instability in the North African nation.
http://www.nytimes.com/2012/09/24/world/africa/attack-in-libya-was-major-blow-to-cia-efforts.html?pagewanted=all&_moc.semityn.www