The Unknown Known (2013)

Errol Morris returns to the subject of political decision-making, this time focusing on former U.S. Secretary of Defense Donald Rumsfeld. Through a series of interviews and an examination of his 'snowflakes' (memos), the film explores Rumsfeld's role in the Iraq War and his philosophy of power. It is a fascinating, if frustrating, portrait of a man who remains elusive and unapologetic.

The film provides a unique look at the inner workings of the U.S. government and the justifications for the invasion of Iraq, making it a valuable companion to 'The Fog of War.'