South Africa's Zuma wins party backing as Gupta row mounts

By Joe Brock PRETORIA (Reuters) - South Africa's ruling party said on Sunday it had full confidence in President Jacob Zuma after a three-day party summit following mounting claims of political interference by the leader's business friends. Pressure on Zuma intensified when former cabinet spokesman Themba Maseko told the Sunday Times newspaper that the president asked him in a 2010 phone call to meet the Guptas - a family of Indian-born businessmen who relocated to South Africa in the 1990s - at