The Stream S2015E176 - In African countries, how much do term limits matter?

Changing the limits on term limits – it's a scenario in some countries where presidents seek to rewrite their constitutions to stay in power. In Africa, this year alone, leaders in Rwanda, Burundi, DR Congo and Congo Republic have challenged term limits for heads of state. How long is too long in office, and what impact do Africa's "sit-tight presidents" have on a country's development?