Two weeks after voters cast ballots, the results of the country's presidential election still have not been released.
Independent tallies suggest Mugabe lost, but did get enough votes to force a runoff.
Opposition leader Morgan Tsvangirai claims he won the election outright. He has been traveling the region asking the leaders of neighboring countries to push Mugabe to resign.
Zambia's president opened today's summit, saying the aim of the meeting is to help Zimbabwe find a solution "that generally reflects the will of the Zimbabwean people."