A Palestinian delegation including Hamas agreed joint demands Sunday to present to Egyptian mediators in Cairo for a truce with Israel, including an end to the Gaza blockade, officials said.

The delegation, which includes members of President Mahmoud Abbas' Palestinian Authority and Gaza's Hamas rulers, will meet the Egyptian mediators later on Sunday.

Ask any child in Gaza to do a drawing and the resulting picture is likely to be a house being bombed by a fighter plane.

In the strife-torn Palestinian enclave, thousands of children are suffering from the trauma of war but resources to help them are scarce.

Israel eavesdropped on U.S. Secretary of State John Kerry during doomed peace talks with the Palestinians last year, German news weekly Der Spiegel reported Sunday.

The article said the Israelis and at least one other secret service listened in on Kerry's conversations as he tried to mediate, in a development that Der Spiegel said was likely to further strain ties between Israel and the United States.

A Hamas team arrived in Cairo on Sunday for talks with Egyptian mediators on a possible truce in Gaza, an airport official and state news agency MENA said.

The delegation is led by senior Hamas official Ezzat al-Rishq, the sources said.

Thousands of protesters, many wrapped in Palestinian flags, rallied outside the White House on Saturday to call for peace and an end to the fighting in Gaza.

The crowd, young and old from across the United States, including scores of children on parents' shoulders, chanted "End U.S. Aid to Israel" and "Israel out of Palestine."

The U.N. expressed outrage after another deadly strike on one of its schools Sunday as Israel began pulling some troops from Gaza in a widely-acknowledged step towards unilateral withdrawal.

The strike killed 10 people at a school in the southern city of Rafah where around 3,000 Palestinians who had been made homeless by the violence had been sheltering, in the third such incident within 10 days. 

A senior Palestinian delegation arrived in Cairo on Saturday to discuss a truce in the Gaza Strip, even though Israel has said it would not send representatives for the talks.

The Palestinian delegation, which included the Palestinian Authority's spy chief Majid Faraj, will be joined by Hamas representatives and meet Egyptian officials on Sunday.

Unlike many Palestinians who are desperate to flee Gaza, Rami and Osama had no choice but to return after years in Israeli jails, although the scope of the devastation has shocked them.

At the Erez border crossing, a vast military-style hangar, the two young men with cropped dark hair look rather lost as nearby Israeli tanks fire into Gaza.

The Palestinian ministry of health announced Saturday the death of 128 people in Rafah, raising the death toll of the 25 days of Israeli assault on the Gaza Strip to 1,680 while more than 9,000 have been wounded.

Despite the bloodshed, Hamas and Israeli Prime Minister Benjamin Netanyahu vowed to continue fighting.

President Abdel Fattah al-Sisi said on Saturday an Egyptian truce plan provides a "real chance" to end the Gaza conflict, stressing the need for its speedy implementation.

A Palestinian delegation is expected in Cairo on Saturday to discuss a durable truce to end the fighting, a day after a temporary ceasefire collapsed with Israel and Hamas blaming each other.