There are known knowns, known unknowns and -- most alarmingly -- unknown unknowns. At least, that is what former Defense ...

It was the late Secretary of Defense and presidential advisor Donald Rumsfeld who famously observed, “There are known knowns … there are known unknowns … but there are also unknown unknowns.” Mr.

Donald Rumsfeld is remembered for a lot of things. He once gave Saddam Hussein a gift of golden spurs. His boss, Richard Nixon, called him a “ruthless little bastard” on those secret tapes. But his ...

As its subtitle suggests, one reason that Errol Morris’s 2003 documentary The Fog of War: Eleven Lessons From the Life of Robert S. McNamara proved so resonant is that its subject was partly a proxy ...

In Oliver Stone’s “JFK,” the shadowy figure David Ferrie says of the Kennedy assassination, “It’s a mystery wrapped in a riddle inside an enigma.” That also could describe the mind of Donald Rumsfeld, ...

Add Yahoo as a preferred source to see more of our stories on Google. I found myself thinking of former Bush administration Secretary of Defense Donald Rumsfeld, who was a bit of a philosopher. “There ...

Roughly a quarter century ago, during the Iraq War, Secretary of Defense Donald Rumsfeld shed some light on how military leaders manage uncertainty. In what became his most memorable analysis—he even ...