Four-star U.S. Army General who oversaw Operation Allied Force during the Kosovo War.
He graduated at the top of his class from West Point in 1966 and went on to study philosophy, politics and economics at Oxford University.
He was a 2004 candidate for the Democratic Party's presidential nomination, but he dropped out of the primary race and endorsed candidate John Kerry.
He grew up in Chicago, Illinois.
During the 2008 Presidential race, Clark publicly questioned whether the military Service of Republican candidate John McCain qualified him to lead the country.
