The U.N. and the International Red Cross on Tuesday urged the opening of all Gaza crossings to enable the delivery of desperately needed aid to the war-torn territory.

A fragile truce in Gaza, introduced under U.S. President Donald Trump's plan, needs to see crossings opened to flood the famine-hit territory with aid, they said.

"That's what humanitarians, including ICRC, have been calling for in the last hours is making sure that, because of the huge needs, all entry points can be open," Red Cross spokesman Christian Cardon told reporters in Geneva.

The U.N. humanitarian agency OCHA's spokesman Jens Laerke added: "We need all of them open."

He acknowledged that not all of the crossings were currently "functional," with some "partially destroyed," while road clearance was needed inside Gaza to allow trucks in.