"The influx of economic refugees from Zimbabwe places a significant strain on our capacity and resources and that is why we have consistently sought to follow the path that holds out the greatest prospect of success."
The political and economic reality of Zimbabwe required an inclusive solution, Zuma said.
"Though some may suggest otherwise, there is no lasting solution in Zimbabwe that excludes Zanu-PF, just as there is no solution that excludes the MDC.
"That is why, as South Africa, as the Southern African Development Community, and as the African Union, we have expended great effort to ensure that the parties in Zimbabwe reach agreement on the most critical issues facing the country."
Zuma said Zimbabweans had to determine their own future.
"That is why all parties within the country, on the continent, and in the broader international community, must do what they can to ensure the attainment of conditions for free and fair elections."