- Africa's five longest presidencies are cumulatively 169 years
- The average age of the 10 oldest presidents is 78.5, compared to 52 in the most developed countries
David E Kiwuwa is Associate Professor of International Studies at Princeton University. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news analysis and commentary. The views expressed in this commentary are solely those of the author. This piece was originally published in October 2015.
There is something unmistakably common in Africa: the continent's aging and long-serving presidents.