Major Pierre Buyoya is a Burundian politician who has ruled Burundi twice, from 1987 to 1993 and from 1996 to 2003. With 13 years combined as Head of State, Buyoya is up to now the longest serving Burundian President. Wikipedia*
On the C-SPAN Networks:
Pierre Buyoya has one video in the C-SPAN Video Library; the first appearance was a 2011 Forum.