Israel's security cabinet was set to discuss on Monday the next phase of the ceasefire with Hamas, as top U.S. diplomat Marco Rubio began a visit to Saudi Arabia where he will push Donald Trump's proposal for a U.S. takeover of Gaza.

Rubio travelled to Riyadh from Israel, where he kicked off his first Middle East trip as Trump's secretary of state.

Top U.S. diplomat Marco Rubio and Israeli Prime Minister Benjamin Netanyahu presented a united front Sunday against their common enemies, threatening to "open the gates of hell" on Hamas and "finish the job" against Iran.

U.S. Secretary of State Marco Rubio met with Israel's prime minister in Jerusalem on Sunday for talks on the Gaza ceasefire, launching a Middle East tour a day after the latest hostage-prisoner exchange.

On his first visit to the region as Washington's top diplomat, Rubio is expected to push U.S. President Donald Trump's widely condemned proposal to take control of Gaza and relocate its more than two million residents.

Israel's defense ministry said Sunday that a shipment of "heavy" U.S.-made bombs arrived overnight in Israel, as Marco Rubio began his first visit to the country as Washington's top diplomat.

Saudi Arabia will host the leaders of four Arab countries at a summit on February 20 to discuss President Donald Trump's proposal for a U.S. takeover of Gaza, a source with knowledge of the preparations said on Friday.

Israel is working with the U.S. to get all of its hostages out of Gaza as "quickly as possible", a statement from the office of Israeli Prime Minister Benjamin Netanyahu said Saturday.

Gaza militants freed three Israeli hostages on Saturday in an exchange that is also saw the release of 369 Palestinians from Israeli custody, the latest such swap under an ongoing truce deal.

An AFP journalist saw masked Hamas militants parade the hostages onto a stage in Gaza's southern city of Khan Younis, where they were told to address the crowd before their handover to the Red Cross and eventually Israel.

Hamas was expected Friday to name three hostages it will release this weekend as part of a planned exchange for Palestinian prisoners, local media said, after days of uncertainty in which Israel threatened to scrap a nearly month-old Gaza ceasefire deal.

Israel warned Thursday that the Palestinian militants must release three living hostages this weekend or face a resumption of the war in Gaza, after Hamas said it would pause releases over apparent Israeli violations of the truce.

Secretary of State Marco Rubio said the United States was eager to hear new proposals by Arab states on Gaza, after President Donald Trump's stunning plan to displace the territory's entire population.

Western allies and Arab countries are gathering in Paris on Thursday for an international conference on Syria to discuss the country's future after the fall of former Syrian president Bashar Assad and amid uncertainty over the United States' commitment to the region.

It's the third conference on Syria since Assad was ousted in December, and the first since President Donald Trump's administration took over in the U.S.