Richard Holbrooke, the U.S. special envoy for Pakistan and Afghanistan, is in the intensive care unit at a hospital in Washington, according to a media reports, citing a hospital official. Holbrooke, 69, felt ill while working on at the State Department headquarters, Philip Crowley, the department spokesman. He was taken to George Washington University Hospital. Holbrooke is a veteran diplomat who, as an assistant secretary of state under President Bill Clinton, was the chief architect of the 1995 Dayton accords that ended the war in Bosnia in the 1990s. He later served as the U.S. envoy to the United Nations. He was a diplomat in President Jimmy Carters administration and was in charge of U.S. relations with China when the U.S. normalized ties in December 1978. Over the last two years, Holbrooke has been traveling to Pakistan and Afghanistan to drum up their support as the US intensified its attacks against the Taliban and al-Qaeda in Afghanistan. The U.S. and allies have a combined force of about 150,000 troops to turn back Taliban advances and train Afghan soldiers and police.