John Atta Mills, Ghana
President John Atta Mills of Ghana was barely three years into his four-year presidential term when he died of a cardiac-related condition in 2012. Mills became president after winning the 2008 presidential election where he defeated his main challenger, Nana Akufo-Addo, by a slim margin following two rounds of elections.
Before his rise to power, Mills served as vice president under President Jerry Rawlings and was also the national tax commissioner from 1988 to 1996. As president, Mills instituted a number of far-reaching economic and social reforms that earned him both local and international commendations. Mills died at 68 on July 28th, 2012 at a military hospital in Ghana.