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South Africa's President Jacob Zuma (R) and his Democratic Republic of Congo's counterpart Joseph Kabila arrive at the opening of the Heads of Southern African Development Community (SADC) states meeting in Kinshasa, September 7, 2009. Southern African states are looking to hold a special summit on Zimbabwe as part of efforts to end a row over a power-sharing pact between its leaders, a spokesman for Prime Minister Morgan Tsvangirai said on Monday.