Says more than 800,000 people have now fled rafah in southern gaza. Many have been forced to head northwards to areas which the un says have little clean Drinking Water or sanitation as the Israeli Offensive continues. 0ur Diplomatic Correspondent paul adams sent this report. Street battles injabalia. Israeli forces have been fighting here for days. Gunfire. Hamas, they say, is back, and needs to be dealt with. This is dangerous urban warfare, at close quarters. The israelis were here months ago and moved on. These, some warn, early signs of an insurgency that could last for months. Israel has been attacking from the air too. Scenes today reminiscent of the war s terrifying early stages. Buildings flattened, bodies trapped under the rubble. Gunfire. More street battles, this time in the south. The israeli army still advancing on rafah, the only city yet to experience a full scale assault. But 800,000 palestinians have already fled the area, to the coast or to other devastated cities. W