Rich Heldenfels
Beacon Journal popular culture writer

The documentary The Unknown Known is an extended cat-and-mouse game, but one in which each side thinks he is the cat.

Oscar-winning director Errol Morris, famous for pinning down Robert McNamara in the documentary The Fog of War, turns his attention to former Secretary of Defense Donald Rumsfeld in The Unknown Known (Anchor Bay/Radius-TWC, $24.98 DVD, $29.99 Blu-ray). Rumsfeld was famous for saying that “there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns — the ones we don’t know we don’t know.” Morris supplements that with a 2004 Rumsfeld memo where he adds the idea of unknown knowns: “things that you think you know that it turns out you did not.”

That’s a notion that comes into play repeatedly in The Unknown Known, which arrives for home viewing on Tuesday; much of the film has Rumsfeld facing the camera, answering Morris’s offscreen questions, often in swaggering and bantering fashion. While Rumsfeld’s study of history has led him to see numerous failures of imagination — going back to at least Pearl Harbor — it is clear that Rumsfeld’s imagination is vast and powerful, especially when it comes to justifying his own actions.

With a smile on his lips that for the most part does not reach his nearly closed eyes, Rumsfeld bobs and weaves, trying to turn questions back on Morris, and in at least one case offering a flat denial that Morris promptly undercuts with an archival clip of Rumsfeld saying precisely what he has just denied. Unfortunately, Morris does not call Rumsfeld on that in person, although there are other times when Morris’s incredulity is evident.

Instead, we try to get past what is known about Rumsfeld to what is indeed unknown, including what he chose to know. (Look, for example, at how he says he handled the discovery of a safe left behind by a predecessor in his office.) And that’s where the film is most interesting: How did one of the most important people in the country think through the major issues? Helping Morris in that process is Rumsfeld’s copious memo-making, which was so frequent that his notes became known as snowflakes.

But even when faced with his own words, Rumsfeld labors to keep parts of his thinking unknown. And the film never quite gets past some of his walls. Even if it did, Rumsfeld would likely offer one of those unnerving smiles — and another wall.

Extras include audio commentary by Morris, a separate conversation with the filmmaker and other elements.

Down video road: HBO Home Entertainment has not yet set a release date for the third season of Veep on DVD and Blu-ray, but it is making it available via digital retailers on July 7. On iTunes and Google Play, the release will include deleted scenes.

Fox Home Entertainment will bring the sixth season of Sons of Anarchy to DVD and Blu-ray on Aug. 26; the seventh and final season begins this fall. That same date brings the fourth season of The Walking Dead to DVD and Blu-ray, ahead of the fall launch of the fifth season.

And Warner Bros. Home Entertainment has set Oct. 14 for the release of the third season of 2 Broke Girls on DVD; the fourth season begins on CBS on Oct. 27.

Rich Heldenfels writes about popular culture for the Beacon Journal and Ohio.com, including in the HeldenFiles Online blog, www.ohio.com/blogs/heldenfiles. He is also on Twitter and has a new Facebook page: Rich Heldenfels, Pop Culture Guy. You can contact him at 330-996-3582 or rheldenfels@thebeaconjournal.com.