Donald rumsfeld quotes known knowns

Saying associated with the US invasion of Iraq

"There are unknown unknowns" is a phrase from a response United States Secretary of DefenseDonald Rumsfeld gave to a question at a U.S.

Department of Defense (DoD) news briefing on February 12, , about the lack of evidence linking the government of Iraq with the supply of weapons of mass destruction to terrorist groups.^[1] Rumsfeld stated:

Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things we know we know.

Donald rumsfeld quotes known knowns

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Donald rumsfeld known unknowns speech transcript

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. And if one looks throughout the history of our country and other free countries, it is the latter category that tends to be the difficult ones.^[1]

The statement became the subject of much commentary.

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