South Africa is hoping to avoid further isolating Zimbabwe and repeating the refugee crisis that followed the country's 2008 election.
In July, Zimbabweans will vote in another election likely to be rigged by the ruling party. But President Robert Mugabe's small reforms have eased pressure from the West.
The African National Congress has ruled South Africa since the end of apartheid. But riddled by corruption charges and internal feuding, it looks increasingly vulnerable.
In an unfiltered interview with the Guardian last week, Zambian Vice President Guy Scott had fighting words for the continent's economic powerhouse. Now Pretoria is demanding an explanation.
While the murder trial of Oscar Pistorius has focused renewed global attention on South Africa’s epidemic of violence, for many the death of a young cab driver highlights a more familiar story.