The United Nations and experts say that Palestinians in Gaza are at risk of famine, with reports of increasing numbers of people dying from causes related to malnutrition. Yet Israel says hundreds of truckloads of aid are waiting at the border for the U.

"The humanitarian catastrophe that we are witnessing in Gaza must end now," a joint statement from the three countries reads.

More than 1,000 Palestinians have been killed by Israeli forces since May while trying to get food in Gaza, mostly near food sites run by an American contractor, the U.N. human rights office said.