text:  Residents of Gaza City say they are seeing some of the heaviest fighting since the Israeli invasion began. Columns of tanks were reported to be moving in from several directions. A Palestinian official has said that indirect ceasefire negotiations between Hamas and Israel are to resume in the Qatari capital, Doha. A packed courthouse in the Kenyan city of Mombasa has heard opening arguments in the trial of the cult leader Paul McKenzie. He is alleged to have incited his followers