Israel-Gaza live updates: Hamas publishes names of 20 living Israeli hostages to be released

President Donald Trump confirmed he plans to travel to Egypt and Israel as the initial steps of the Gaza peace plan are reached.

"I'll be going to Israel. I'll be speaking at the Knesset, I think early on. And then I'm also going to Egypt," said Trump during remarks Friday from the White House, adding, “Everyone wants this deal to happen."

"I'll go to Cairo. I think that's where we're going, as opposed to the place of the signing. And we have a lot of leaders from all over the world coming to know they've been invited," he said.

He did not say when exactly he'd be traveling.

Trump said he was confident the ceasefire would hold.

“It's a great deal for Israel, but it's a great deal for everybody, for Arabs, for Muslims, for everybody, for the world," he said.

-ABC News' Lalee Ibssa

U.S. troops have begun to arrive in Israel as part of their work to support and oversee the ceasefire agreement, a person familiar with their work told ABC News.

-ABC News' Anne Flaherty

The International Rescue Committee and Doctors Without Borders both called for increased amounts of humanitarian aid to enter Gaza immediately on Friday now that the first phase of the ceasefire deal has been agreed upon and gone into effect.

The IRC said they have "more than 5 tons of life-saving medical supplies," ready and waiting to enter Gaza as soon as it is allowed.

"After months of a near-total Israeli siege, the most basic necessities are still urgently needed in Gaza: medical equipment, medicines, food, water, fuel, and adequate shelter for 2 million people who will face the approaching winter without roofs over their heads," Doctors Without Borders said in a statement Friday.

"This ceasefire must be accompanied by an immediate massive and sustained scale-up of aid into and across the Strip, including the north," the organization added.

-ABC News' Nadine Shubailat

International Committee of the Red Cross teams in Israel, Gaza and the West Bank "will support," the implementation of the ceasefire agreement "by helping to return hostages and detainees to their families," ICRC President Mirjana Spoljaric said in a statement on Friday.

The ICRC teams are also "prepared to bring more lifesaving aid into the Gaza Strip," Spoljaric said.

"The coming days are critical. I urge the parties to hold to their commitments. Release operations must be carried out safely and with dignity. Humanitarian assistance must resume urgently at full capacity and be delivered to people safely wherever they are. The ceasefire must hold. Lives depend on it," Spoljaric added.