Former South African President Thabo Mbeki began mediation between Zimbabwean President Robert Mugabe and opposition leader Morgan Tsvangirai on Tuesday to try to rescue a power-sharing pact. The deal, brokered by Mbeki last month, is in danger of collapse over disagreements about cabinet posts and Tsvangirai, leader of the MDC, threatened to pull out of it at the weekend after Mugabe allocated key ministries to his ZANU-PF party. (Full Story)