The United Nations humanitarian chief said the summit co-chaired by the U.S and Egypt and attended by world leaders Monday shows the international community's commitment to the implementation of the ceasefire agreement between Israel and Hamas.

“There are so many things that could go wrong in the coming days and weeks,” Tom Fletcher told The Associated Press in Cairo.

“But all of us working on this want to get the hostages home and want to get masses and masses of aid... into Gaza to save as many lives as possible.”

Fletcher said trucks of aid have begun going into Gaza on Sunday, including cooking gas for the first time in months but not yet at the scale they hope for in the days and weeks ahead.

He said the U.N. has a plan for the next two months to restore basic medical and other services, bring in thousands of tons of food, nutritional supplies, and fuel, and remove rubble.

It is a daunting task, Fletcher said, “But I'm absolutely determined that we will not fail and that we will do everything we can to get the access, to keep the ceasefire in place, to mobilize the funding necessary, and then we will strain every sinew to deliver for the people of Gaza.”

He said the U.N. has the networks, the expertise and the experience to beat the famine that has taken hold in Gaza City.

Beyond lifesaving support in the first 60 days, the U.N. is still working to assess the cost of rebuilding Gaza, he said.

The war began when Hamas-led militants launched a surprise attack on southern Israel on October 7, 2023, in which some 1,200 people were killed and 250 taken hostage.

In Israel’s ensuing offensive, more than 67-thousand Palestinians have been killed in Gaza, according to Gaza’s Health Ministry, which doesn’t differentiate between civilians and combatants but says around half the deaths were women and children.

The ministry is part of the Hamas-run government, and the U.N. and many independent experts consider its figures to be the most reliable estimate of wartime casualties.

The war has destroyed large swaths of Gaza and displaced about 90% of its two million residents.

It has also triggered other conflicts in the region, sparked worldwide protests and led to allegations of genocide that Israel denies.

AP video shot by Mohamed Wagdy