HARARE - Archbishop Desmond Tutu is among activists in southern Africa who have launched a fast and hunger strike in solidarity with the people of Zimbabwe.
The new Save Zimbabwe Now movement says African leaders must abandon the policy of quiet diplomacy and recognise there is no legal government in Zimbabwe.
A Johannesburg Methodist church, long a place of refuge for Zimbabweans in exile, will be the protesters' base.
Power-sharing plans in Zimbabwe remain stalled since a deal in September.
President Robert Mugabe and opposition factions ended 12 hours of talks on Tuesday with no progress.
The activists said they would protest next Monday at a special regional summit, set for South Africa or Botswana, that has been convened in the latest effort to break the deadlock.
Food shortages, a cholera epidemic, the collapse of the health and education systems, and an economic meltdown are among Zimbabwe's litany of woes.
Human rights activist Graca Machel, who is also the wife of former South African President Nelson Mandela, attended the launch at the church but said she would not be fasting for personal reasons.
Wilson Mugabe, a pastor from Zimbabwe who is not related to its president, broke down in tears as he told the congregation about the plight of his country men and women.
In November, Mr Mugabe's government barred the Elders from making a fact-finding tour of Zimbabwe.