Donald Henry Rumsfeld (born July 9, 1932) is an American politician and businessman who served as the 13th Secretary of Defense under President Gerald Ford from 1975 to 1977 and as the 21st Secretary of Defense under President George W. Bush from 2001 to 2006. Combined, he was the second longest serving defense secretary behind Robert McNamara and the first to serve two non-consecutive terms.
Rumsfeld was White House Chief of Staff during part of the Ford Administration and also served in various positions in the Nixon Administration. He was elected to four terms in the United States House of Representatives, and served as the United States Permanent Representative to NATO. He was president of G. D. Searle & Company from 1977–1985, CEO of General Instrument from 1990–1993, and chairman of Gilead Sciences from 1997-2001.
Rumsfeld is best known for his aggressive leadership of the Department of Defense after the 9-11 attacks in 2001, and for his close supervision of the American-led wars in Afghanistan (from 2001) and Iraq (from 2003). His micromanagement of the Defense Department angered many generals and the slow progress of the Iraq war made him a political liability for Bush.
Donald Rumsfeld's new book, "Known and Unknown: A Memoir" can be found here.