Zambian president Levy Mwanawasa has instructed his lawyers to sue opposition Patriotic Front leader Michael Sata for defaming him as corrupt, the official Zambia Daily Mail said on Sunday. Darlington Mwape, the president's special assistant for legal affairs, was quoted as saying that Sata has defamed the president by alleging that he is corrupt. A statement issued by Mwape Saturday said Sata had alleged on Radio Icengelo that the president had acquired eight farms and equipped them with combine harvesters and tractors since he came into office in early 2002.