Old age haunts Mugabe's political life

Africa's oldest leader and world's second oldest after Shimon Peres of Israel, Mugabe has ruled Zimbabwe since independence from Britain in 1980. Despite speculation over his physical fitness Mugabe accepted nomination from his Zanu-PF party to stand for another five-year term in elections due in July.

But doubts have been cast on whether he still has the physical and mental stamina to go through an election campaign and complete another full term.