As daily life becomes harder in Gaza, with food shortages reported, the UN said it is gravely concerned about the prospect of any ground invasion. The UN’s Middle East envoy said an assault on the ground would just mean “another cycle of violence and a further escalation of the conflict”.Robert Serry said: “Much of Gaza’s infrastructure has now been destroyed. The death and injury toll in Gaza continues to mount. Hamas rockets are now reaching 40 kilometres into Israel. Protection of civilians, the fabric of Gaza, the future of the peace process and regional stability are all trapped between the irresponsibility of Hamas rocket attacks and the excessiveness of Israel’s response.” Meanwhile, the aid organisation Oxfam has rejected recent comments by the Israeli Foreign Minister on the humanitarian situation. On Thursday Tzipi Livni said: “We keep the humanitarian situation in the Gaza Strip completely as it should be. The crossings are open, more than it used to be before the military operation. We understand that while operating in Gaza Strip against Hamas, we need to ease the life of the population as far as we can.” But Oxfam said the humanitarian crisis is getting worse by the day, with hospitals struggling to cope and food and clean water in short supply.