Yoweri Museveni, President of Uganda, has been in power since 1986.
Robert Mugabe, 91 – President of Zimbabwe Robert Mugabe is 91 years old, and gained power in 1987. His rule has been highly controversial. He once won the top prize in a lottery organized by a state-owned bank, among other things. His heir apparent is close ally and Vice President Emmerson Mnangagwa, nicknamed 'Crocodile'.