A detailed CIA timeline of the assault on U.S. facilities in Benghazi paints an anguishing picture of embattled Americans waiting for Libyan local security forces that didn’t come and courageous CIA officers who died on a rooftop without the heavy weapons they needed, trying to protect their colleagues below. It’s a story of individual bravery, but also of a CIA misjudgment in relying on Libyan militias and a newly formed Libyan intelligence organization to keep Americans safe in Benghazi. While there were multiple errors that led to the final tragedy, there’s no evidence that the White House or CIA leadership...