Zimbabwe is noted for having the oldest president in the world. His name is Robert Mugabe and he is 91 years old. He is also considered to be one of the few remaining ruling dictators in Africa. However, he has managed to do much good for his people, improving the education system and other things.
The second oldest head of the state is 89 and she is the queen of England Elizabeth II. However, she is not the ruling head, but rather is the heirloom of UK.