Israel's blockade of the Gaza Strip has created the worst humanitarian crisis since the Israeli occupation began in 1967, aid and rights groups said today.
Food shortages, crumbling health services and a water and sewage system close to collapse are all part of the misery facing 1.5 million Palestinians in Hamas-controlled Gaza, a report by a coalition of relief groups said.
"As we speak, sewage is literally pouring into the streets," said Geoffrey Dennis, head of Care International, one of the eight non-governmental bodies behind the report.
"Over the past three weeks we've only been able to send in food and medicine and the aid dependency is rising."
Israel imposed restrictions on the flow of people and goods and impeded economic activity last June when Hamas Islamists seized control of Gaza.
It tightened the blockade in January, limiting supplies of fuel and other goods in what it described as a response to cross-border rocket fire by militants.
The report said 1.1 million people - 80 per cent of the population - were dependent on food aid, and that the health system was in tatters, with hospitals facing daily power cuts lasting eight to 12 hours a day due to fuel and electricity restrictions.
Almost 18 per cent of patients seeking emergency treatment outside Gaza last year were refused permits to leave, it said.
John Ging, director of United Nations Relief and Works Agency in Gaza, said: "The whole infrastructure is in a state of collapse, whether it's water, sanitation or just the medical services. . . . If there's a further military offensive it will again just add and compound an already desperate situation."
Aid groups and legal experts have called Israel's blockade illegal under international law because it constitutes "collective punishment" of the entire population.