Palestinian resistance group Hamas has moved back into several areas of Gaza from which the Israeli military withdrew under the U.S.-brokered cease-fire, reestablishing its police presence and working to revive basic public services.

The inaugural meeting of U.S. President Donald Trump's "Board of Peace" on Thursday included an announcement on the recruitment of a new transitional Palestinian police force in Gaza meant to take over security from Hamas.

It also saw several countries pledge to send troops for the nascent International Stabilisation Force in the Gaza Strip, without any timetable set.

"Everyone knows that Hamas possesses the real power in Gaza," said Jaber Shaaban, a displaced Palestinian living in a tent in Gaza City.

"Hamas is the strongest and largest organized entity and it has power, police and a government," the 64-year-old added.