Zimbabwe opposition leader Morgan Tsvangirai has said no progress has been made in power-sharing talks with President Robert Mugabe.
A new summit of southern African leaders will next week try to find a solution to Zimbabwe's political impasse.
Leaders of the 15-nation Southern African Development Community (SADC) will hold the summit on 26 January in a new bid to break the deadlock.
Mr Mugabe threatened yesterday to break off power-sharing talks if the opposition declined a deal, saying ‘either they accept or it's a break’.
Mr Tsvangirai's MDC, meanwhile, insisted it would not join a unity government until all its concerns had been addressed - including allegations that its supporters had been abducted and tortured by state security agents.
The two sides have yet to agree on how to share power within cabinet despite repeated interventions by African leaders.
The agreement calls for 84-year-old Mr Mugabe to remain president while Mr Tsvangirai would take the new post of prime minister.
The impasse has only worsened the plight of ordinary Zimbabweans, with half the population dependent on food aid, astronomical levels of hyperinflation and a cholera epidemic sweeping unchecked across the country.
The economy's collapse has accelerated at an alarming rate, highlighted Friday when the central bank announced a new 100 trillion dollar note to cope with hyperinflation.
