He was well known for an extraordinary turn of phrase he made during a press conference in 2002, but former Secretary of Defence Donald Rumsfeld did not impress everyone. Following the harrowing 9/11 attacks in 2001, Rumsfeld drew criticism from all across the America for becoming one of the key figures in enforcing the both the war in Iraq which began in 2003 and ended in 2011, and the war in Afghanistan which started less than a month after 9/11. It is often wondered whether or not Rumsfeld would've become President of the United States had Ronald Reagan enlisted him as Vice President over George W. Bush. Either way, Rumsfeld changed attitudes with his notion of 'known knowns', 'unknown unknowns' and, of course, 'unknown knowns'.
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