Mugabe, who has ruled Zimbabwe since independence in 1980, has vowed to stand again as president in elections due in 2018.

, Zimbabwean President Robert Mugabe delivers a speech in Harare, 2011. Mugabe insisted that new elections be held this year with or without a new constitution agreed to in his power-sharing deal with Prime Minister Morgan Tsvangirai.© AFP Jekesai Njikizana