A rocket hit the headquarters of the U.N. peacekeeping mission in southern Lebanon in the coastal town of Naqoura as clashes between Hezbollah and its allies and the Israeli military escalated Sunday.

The U.N. mission said no one was hurt even though the peacekeepers were not in shelters. It did not specify where the rocket came from but expressed disappointment saying that despite the mission's efforts to get the sides "to de-escalate the situation,” the violence continues.

Hezbollah staged an attack on Sunday morning against Israeli military posts on Lebanon's border, drawing Israeli retaliatory fire.

Hezbollah said it shelled Israeli military positions in the northern Israeli border settlement of Shtula. The group said in a statement the attack was in retaliation for Israeli shelling that killed Reuters videographer Issam Abdallah on Friday and two Lebanese civilians on Saturday.

Medics in Gaza warned Sunday that thousands could die as hospitals packed with wounded people run desperately low on fuel and basic supplies. Palestinians in the besieged coastal enclave struggled to find food, water and safety ahead of an expected Israeli ground offensive in the war between Israel and Hamas.

Israeli forces, supported by a growing deployment of U.S. warships in the region, positioned themselves along Gaza's border and drilled for what Israel said would be a broad campaign to dismantle the militant group. A week of blistering airstrikes have demolished entire neighborhoods but failed to stem militant rocket fire into Israel.

Hamas claimed responsibility Sunday for two infiltrations from Lebanon to Israel that killed three of its fighters, as war rages between the Gaza-based militants and Israel.

The Ezzedine al-Qassam Brigades, Hamas' armed wing, said its members were "able... to blow up the border fence and... go forth inside occupied Palestine," clashing with "the enemy," whose planes targeted the fighters, killing three on Saturday.

A Reuters videographer killed in Israeli shelling of southern Lebanon was laid to rest in his hometown Saturday in a funeral procession attended by hundreds of people.

Draped in a Lebanese flag, Issam Abdallah’s body was carried on a stretcher through the streets of the southern town of Khiam, from his family’s home to the local cemetery.

Iranian Foreign Minister Hossein Amir-Abdollahian said Saturday that anti-Israel militant groups in the region are “fully ready” to respond to any move by Israel.

The minister spoke in Beirut at the end of a tour that took him to Syria, Iraq and Lebanon, where Iran enjoys wide influence and where tens of thousands of Iran-backed fighters are deployed.

A Reuters journalist of the Lebanese nationality was killed when an Israeli shell landed in a gathering of international journalists covering clashes on the border in south Lebanon on Friday. Six other journalists were wounded.

"We are deeply saddened to learn that our videographer, Issam Abdallah, has been killed," Reuters said, adding that, he "was part of a Reuters crew in southern Lebanon."

Changes in the climate and land use are combining to dramatically shrink the numbers of insects pollinating key tropical crops. As those problems intertwine and intensify, it likely will hit coffee lovers right in the mug, according to a new study.

And that one-two punch will melt some chocolate fans' dreams too, scientists said.

Middle East economies are gradually recovering as external shocks from the war in Ukraine and global inflation fade, the International Monetary Fund said Thursday, but the escalating war between Israel and the Hamas militant group could dampen the outlook.

IMF Managing Director Kristalina Georgieva said the organization was closely monitoring the economic impact of the war, especially on oil markets, where prices have fluctuated.

A man armed with a knife killed a teacher at the high school in northern France he once attended and critically wounded another teacher and a security guard Friday, authorities said, an attack being investigated as potential terrorism amid soaring global tensions over the war between Israel and Hamas.

French anti-terror prosecutors said they were leading the investigation into the attack at the Gambetta high school in the city of Arras, some 115 miles (185 kilometers) north of Paris. They said they were investigating charges including terror-related murder and attempted murder against the suspect, who was arrested.