I was lucky to have Carol, my mom, here to see this, and a forty-something happy to learn more from her after the movie was over.
This is more of a "mood piece" and well suited for Halloween, given the high quality Tim Burton style music. Good work Danny Elfman.
A goodly portion of the film is caught up in word games, especially this one of going:
known known
known unknown
unknown known
unknown unknown
The middle two are the ones Rumsfeld is most interested in. Sometimes you think you know something and you don't (unknown known) whereas other times you're gazing through fog, maybe knowing some new unknown?
Being Secretary of Defense does this to people apparently.
Carol pointed out that not much or any of the film focuses on the redesign of Pentagon weaponry that occurred under Rumsfeld's tenure. Lots more with satellites nowadays.
The focus was more on war in the Middle East and the US getting its wish apparently: an impossible to draw map. The believability of the old borders has crashed and at least some of those memos seem to suggest this outcome was desired!
"You break it you buy it" is what Colin Powell said, no longer willing to just keep kicking it down the road. Lots of unknown knowns in that picture. Like what's "it" again? Maybe Clinton knows, since he knows what "is" is, or appears to.