"This is the wonderful thing we call 'bread'", said the post on social media: "a mixture of feed for rabbits, donkeys and pigeons. There is nothing good about it except that it fills our stomachs."

That was in February. Now the situation in Gaza is much worse. According to Cindy McCain, the head of the UN World Food Programme, "There is famine - full-blown famine - in the north, and it's moving its way south."

Since December, the UN says, almost every family has been skipping meals every day.

In markets, prices have rocketed. A kilogram of flour that used to cost 30p can now sell for up to £10.

Aid workers blame Israel for preventing vital supplies from getting through. Last week over 2,000 lorries were waiting to cross from Egypt.

The lorries are kept at checkpoints for hours and are searched for anything that might be useful to Hamas. Tent poles have been among the things confiscated.

Egypt has also been criticised for failing to create a proper supply channel. The US has built a temporary pier to bring supplies in by sea, but this has been damaged by bad weather.

Even if all the supplies people need arrived tomorrow, experts warn that many people would die of malnutritionPoor nutrition - caused by not having enough to eat or not having the right foods. .

Joe Biden has said that the US will withhold weapons from Israel if it mounts a large-scale attack on Rafah. But the White House insists that has not happened yet. 

Is America responsible?

Yes! It is the one country that can make a real difference, because Israel depends so heavily on it. If Biden said he was going to withdraw all support, Israel would have to allow proper supplies through.

No! Israel's prime minister, Benjamin Netanyahu, believes that refusing to listen to Biden makes him look like a strong leader. Nothing will stop him deliberately making life difficult for people in Gaza.