Israel’s leaders commemorated Memorial Day on Monday, a usually somber holiday that this year was almost entirely absorbed by the ongoing war in Gaza.

At 11:00 A.M., sirens announced two minutes of silence, and a formation of four fighter planes then flew over Jerusalem and the surrounding areas. At a ceremony, Israeli Prime Minister Benjamin Netanyahu vowed once again to defeat Hamas, a promise he has made repeatedly during Israel’s brutal seven month war with the militant group.

The health ministry in Hamas-run Gaza said Monday that the besieged Palestinian territory's health system is "hours away" from collapse, after fighting has blocked fuel shipments through key crossings.

"We are just hours away from the collapse of the health system in the Gaza Strip due to the lack of the necessary fuel to operate generators in hospitals, ambulances, and (for vehicles to) transport staff," the ministry said in a statement.

Secretary of State Antony Blinken has delivered some of the Biden administration's strongest public criticism yet of Israel's conduct of the war in Gaza, saying Israeli tactics have meant "a horrible loss of life of innocent civilians" but failed to neutralize Hamas leaders and fighters and could drive a lasting insurgency.

In a pair of TV interviews Sunday, Blinken underscored that the United States believes Israeli forces should "get out of Gaza," but also is waiting to see credible plans from Israel for security and governance in the territory after the war.

Israel struck Gaza on Sunday and troops were battling militants in several areas of the Palestinian territory after an Israeli evacuation order sent hundreds of thousands of Palestinians fleeing from Rafah.

The U.N. General Assembly has voted by a wide margin to grant new "rights and privileges" to Palestine and called on the Security Council to reconsider Palestine's request to become the 194th member of the United Nations.

The world body approved the Arab and Palestinian-sponsored resolution by a vote of 143-9 with 25 abstentions. The United States voted against it, along with Israel, Argentina, Czechia, Hungary, Micronesia, Nauru, Palau and Papua New Guinea.

The Biden administration has said that Israel's use of U.S.-provided weapons in Gaza likely violated international humanitarian law but that wartime conditions prevented U.S. officials from determining that for certain in specific airstrikes.

Israel ordered new evacuations in Gaza's southern city of Rafah on Saturday as it prepared to expand its operation, saying it was also moving into an area in northern Gaza where Hamas has regrouped.

Heavy fighting between Israeli troops and Palestinian militants on the outskirts of the southern Gaza city of Rafah has left crucial nearby aid crossings inaccessible and caused over 100,000 people to flee north, a United Nations official said Friday.

Israel's plans for a full-scale invasion of Rafah appear to be on hold for now, with the United States deeply opposed and stepping up pressure by threatening to withhold arms. But even the more limited incursion launched earlier this week threatens to worsen Gaza's humanitarian catastrophe.

On college campuses across the United States, a rallying cry of pro-Palestinian protesters has been " Disclose, divest! We will not stop, we will not rest."

Now some are winning the first of those two demands: Promises to provide information about how much university endowment money is invested in companies profiting from the Israel-Hamas war.

Prime Minister Benjamin Netanyahu has said that a U.S. threat to withhold some arms would not prevent Israel from continuing its offensive in Gaza, indicating it might proceed with an invasion of the packed city of Rafah against the wishes of its closest ally.

President Joe Biden has urged Israel not to go ahead with such an operation over fears it would exacerbate the humanitarian catastrophe in the Palestinian enclave. On Wednesday, he said the United States would not provide offensive weapons for a Rafah offensive, raising pressure on Netanyahu.