from the BBC:
In the run-up to Sunday's summit, hosts South Africa had promised to talk tough with the Zimbabwean parties and "force" an agreement.
Many observers interpreted that as a sign that the region's most powerful country was at last going to pressure President Robert Mugabe into making concessions to the opposition.
In fact, as the dust settles on the talks it is clear that the exact opposite was the case.
Despite winning the only contested election in Zimbabwe this year, opposition leader Morgan Tsvangirai was yet again being urged to compromise by southern Africa leaders.
Tomaz Salomao, the head of the Southern African Development Community (SADC), which organised the summit, announced that an "above normal" situation meant that the home affairs ministry should be "co-managed" by two ministers, one from President Mugabe's Zanu-PF and one from Mr Tsvangirai's Movement for Democratic Change (MDC).
Those... at the summit didn't have time to strategise and that's why they came up with this result
Institute for Security Studies
The joint share of home affairs would go alongside most of Zimbabwe's key ministries in the Zanu-PF portfolio.
Effectively SADC was instructing the MDC to accept Mr Mugabe's definition of power-sharing - that they should take a junior role in his government.
"These regional organs are state to state," David Monyae, a South African analyst, told the BBC. "The idea of opposition groups coming in and getting heard is not something they are comfortable with."...