Hempstone attended George Washington University and graduated from the University of the South. He was a U.S. Marine in the Korean War, leaving as a captain. He did radio rewrite for the Associated Press in Charlotte, North Carolina,. He was a reporter at the Louisville Times, Louisville, Kentucky, rewrite man at National Geographic, Washington, D.C., then a reporter at the Washington Star. He was a fellow of the Institute of Current World Affairs in Africa. He served as a foreign correspondent for the Chicago Daily News in Africa and in Latin America. He was a foreign correspondent for the Washington Star in Latin America, and Europe,. He was associate editor and editorial page director of the Star. He left the Star in 1975 after a disagreement with Joe L. Allbritton, its new owner. He wrote a syndicated twice-weekly column, "Our Times," beginning 1975. Hempstone worked as the Africa correspondent for The Chicago Daily News, wrote several books, and wrote a syndicated column carried by 90 newspapers. In 1982 he was named executive editor of the newly founded Washington Times and, following the resignation of editor and publisher James R. Whelan in 1984, briefly served as editor of the paper before being replaced by Arnaud de Borchgrave. He was appointed ambassador to Kenya by George H. W. Bush in 1989, a time when the United States was beginning to push African countries toward democracy and human rights. Hempstone worked toward these goals by fighting for multiparty elections in Kenya in 1991, nine years after Kenyan presidentDaniel arap Moi had banned all parties except his own. The Moi administration derided him, saying he failed to understand that strong, unified government was necessary to keep Kenya's tribal groups from splitting the country. He aided dissidents and befriended opponents of the administration, causing the African press to describe his style as "bulldozer diplomacy." The Kenyan government isolated him and, according to Hempstone's book Rogue Ambassador: An African Memoir, twice attempted to kill him. Multiparty elections were ultimately held in 1992, and were won by Moi with 36 percent of the vote. In 2001 former Kenyan government minister Nicholas Biwott successfully sued Hempstone for suggesting in his autobiography that Biwott had been involved in the murder of Kenya's minister of foreign Affairs, Dr. Robert Ouko, in February 1990. Hempstone did not defend the action. Hempstone died in 2006 in Suburban Hospital, Bethesda, Maryland, from complications of diabetes.
