Authoritative and exhaustive. A must-watch.

The film is rich in archival-memory and first-person recollections of many key figures, of higher and lower or no rank at all.

There's nothing innovative in the filmmaking, it's simply a gracefully told story - tense here; poignant there - with strong detailing.

Kennedy's take on this dark and convoluted quagmire finds its balance somewhere between oblique reportage and post-hoc apologia.