 but also just water to wash in, so people have become used to washing in the sea. And as a result, all sorts of infections are spreading. Added to this really toxic mix, hospitals are once again battling to deal with extremely high numbers of casualties. And following the spate of attacks over these past few days, the United Nations' Scott Anderson, who's been in Gaza, says that they've witnessed some of the most horrific scenes of the entire nine months of war,