AdvertisementOne Documentary Later, Rumsfeld's Inner World Remains 'Unknown'March 30, 2014NPR StafffacebookEmailDonald Rumsfeld, shown here on a 2006 visit to Iraq, was the Secretary of Defense during the beginning of the U.S. wars in Iraq and Afghanistan. Errol Morris spent over 30 hours interviewing Rumsfeld for his latest documentary. (Getty Images)
