Regional countries should mediate negotiations in Zimbabwe for a transitional government of national unity led by President Robert Mugabe to organise new elections that are free, a state newspaper said on Wednesday.
The opposition Movement for Democratic Change (MDC) and Mugabe's ZANU-PF are locked in an election stalemate over delayed parliamentary results and a possible presidential runoff that has raised fears of widespread violence.
The editorial on The Herald's website said political tensions make it impossible to hold a run-off, which the MDC rejects.
MDC leader Morgan Tsvangirai has said he won the election outright and accused Mugabe of seeking a run-off to rig victory in the biggest challenge to his 28-year rule.
Tsvangirai has appealed to the Southern African Development Community (SADC) and foreign powers to intervene to guarantee a democratic poll result and prevent widespread violence.
There are signs of growing regional impatience with Mugabe from neighbours who have refused to take a hard line with the former liberation hero despite an economic crisis that has brought millions of Zimbabweans to their knees.
Maritime southern African states refused to allow a Chinese ship carrying arms to landlocked Zimbabwe to unload, in unprecedented action towards Mugabe by long-passive neighbours, including traditional allies.
The action indicated a tougher response by the region, which has been criticised, particularly by the United States, for not doing more to end a three-week delay in issuing results from a presidential election on March 29.
In his toughest comments yet, South African ruling party leader Jacob Zuma said in a Reuters interview in Berlin.
"It's not acceptable. It's not helping the Zimbabwean people who have gone out to ... elect the kind of party and presidential candidate they want, exercising their constitutional right."
Zuma, who has distanced himself from the "quiet diplomacy" of South African President Thabo Mbeki over Zimbabwe, added: "I imagine that the leaders in Africa should really move in to unlock this logjam."
His comments were one factor helping to lift the rand currency to a seven-week high against the dollar. Traders welcomed Zuma's readiness to take a lead on Zimbabwe after concern the crisis would hit Africa's biggest economy.
