Protests are roiling college campuses across the U.S. as upcoming graduation ceremonies are threatened by disruptive demonstrators, with students and others sparring over the war in Gaza and its mounting death toll.

Many campuses were largely quiet over the weekend as demonstrators stayed by tents erected as protest headquarters, although a few colleges saw forced removals and arrests. Many students are demanding their universities cut financial ties with Israel over the large-scale operation in Gaza it says was launched to stamp out the militant Palestinian group Hamas.

A suspected missile attack by Yemen's Houthi rebels targeted a container ship in the Red Sea on Monday, authorities said, the latest assault in their campaign against international shipping in the crucial maritime route.

The attack happened off the coast of Mokha, Yemen, the British military's United Kingdom Maritime Trade Operations center said, without offering any other immediate details.

Israeli officials on Monday appeared to be increasingly concerned that the International Criminal Court may issue arrest warrants against the country's leaders, as international pressure mounts over its war with Hamas in the Gaza Strip.

Meanwhile, Israeli airstrikes on the southern Gaza city of Rafah overnight and into Monday killed at least 22 people, including six women and five children, one of whom was just 5 days old, according to hospital records and an Associated Press reporter.

The White House has said U.S. President Joe Biden had again spoken with Israeli Prime Minister Benjamin Netanyahu as pressure builds on Israel and Hamas to reach a deal that would free some Israeli hostages and bring a cease-fire in the nearly seven-month-long war in Gaza.

The White House said that Biden reiterated his "clear position" as Israel plans to invade Gaza's southernmost city of Rafah despite global concern for more than 1 million Palestinians sheltering there. The U.S. opposes the invasion on humanitarian grounds, straining relations between the allies. Israel is among the countries U.S. Secretary of State Antony Blinken will visit as he returns to the Middle East on Monday.

A Hamas delegation is due Monday in Egypt, where it will respond to Israel's latest proposal for a long-sought truce in Gaza and hostage release after almost seven months of war.

Egypt, Qatar and the United States have been trying to mediate an agreement between Israel and Hamas for months, but a flurry of diplomacy in recent days appeared to suggest a new push towards halting the fighting.

U.S. Secretary of State Antony Blinken said Monday that Israel must still do more to increase the flow of humanitarian aid into the besieged Gaza Strip and that he would use his current Middle East trip — his seventh to the region since the Israel-Hamas war started in October — to press that case with Israeli leaders.

Speaking at events in Riyadh, Blinken said best way to ease the humanitarian catastrophe in Gaza would be to conclude an elusive cease-fire agreement that would release hostages held by Hamas. And, he said Hamas had been presented with an "extraordinarily generous" offer by Israel that he hoped the group would accept.

Hamas said it is reviewing a new Israeli proposal for a cease-fire in Gaza, as Egypt intensified efforts to broker a deal to end the months-long war and stave off a planned Israeli ground offensive into the southern city of Rafah.

Senior Hamas official Khalil al-Hayya gave no details of Israel's offer, but said it was in response to a Hamas proposal two weeks ago. Negotiations earlier this month centered on a six-week cease-fire proposal and the release of 40 civilian and sick hostages in exchange for freeing hundreds of Palestinian prisoners in Israeli jails.

From New York to California, students protesting the Israel-Hamas war slept in tents at college campuses, as some universities moved to shut down encampments and arrested dozens of demonstrators after reports of alleged antisemitic activity.

With the death toll mounting in the war in Gaza, protesters nationwide are demanding schools cut financial ties to Israel and divest from companies they say enable the conflict. Some Jewish students say the protests have veered into antisemitism and made them afraid to set foot on campus.

A senior Qatari official has urged both Israel and Hamas to show "more commitment and more seriousness" in cease-fire negotiations in interviews with Israeli media, as pressure builds on both sides to move toward a deal that would set Israeli hostages free and bring potential respite in the nearly 7-month-long war in Gaza.

The interviews with the liberal daily Haaretz and the Israeli public broadcaster Kan were published and aired Saturday evening. They came as Israel still promises to invade Gaza's southernmost city of Rafah despite global concern for hundreds of thousands of Palestinians sheltering there and as the sides are exchanging proposals surrounding a cease-fire deal.

Ballistic missiles fired by Yemen's Houthi rebels caused "minor damage" to a Panama-flagged oil tanker traveling through the Red Sea, authorities said.

The attack follows an uptick in assaults launched by the Houthis in recent days after a relative lull in their monthslong campaign over Israel's war on Hamas in the Gaza Strip.