DEIR AL-BALAH, Gaza Strip — Israeli airstrikes killed at least 46 people in the Gaza Strip in the past 24 hours, including 11 at a makeshift cafeteria in an Israeli-declared humanitarian zone, medics said. In Lebanon, warplanes struck Beirut’s southern suburbs and killed 33 people elsewhere in the country on Tuesday.

The latest bombardment came as the United States said it would not reduce its military support for Israel after a deadline passed for allowing more humanitarian aid into Gaza. The State Department cited some progress, even as international aid groups said Israel had failed to meet the U.S. demands.

In Lebanon, large explosions shook Beirut’s southern suburbs — an area known as Dahiyeh, where Hezbollah has a significant presence — soon after the Israeli military issued evacuation warnings for 11 houses there.

There was no immediate word on casualties. The Israeli military said it targeted Hezbollah infrastructure, including command centers and weapons production sites, without providing evidence.

Another Israeli strike on an apartment building east of Beirut killed at least six people. Wael Murtada said the destroyed home belonged to his uncle and that those inside had fled from the Dahiyeh last month. He said three children were among the dead.

An Israeli airstrike on a residential building in central Lebanon killed 15 people, including eight women and four children, and wounded at least 12 others, Lebanon’s Health Ministry said. The strike came without warning, and state media said the building was sheltering displaced families.

Israel has been carrying out intensified bombardment of Lebanon since late September, vowing to cripple Hezbollah and put a stop to more than a year of cross-border fire by the Lebanese militant group.

A rocket exploded in a storage building in the northern Israeli town of Nahariya on Tuesday, killing two people, first responders said. Another two people were wounded by shrapnel in a separate impact outside the town.

A Hezbollah drone smashed into a nursery school near the northern Israeli city of Haifa on Tuesday, but the children were inside a bomb shelter and there were no injuries. The impact scattered debris across the playground.

At the same time, Israel has continued its campaign in Gaza, now more than 13 months old, triggered by Hamas’ Oct. 7, 2023, attack into southern Israel.

An Israeli strike late Monday hit a makeshift cafeteria used by displaced people in Muwasi, the center of a “humanitarian zone” that Israel’s military declared earlier in the war.

At least 11 people were killed, including two children, according to officials at Nasser Hospital, where the casualties were taken. Video from the scene showed men pulling bloodied wounded from among tables and chairs set up in the sand in an enclosure made of corrugated metal sheets.

A strike on a house in the northern town of Beit Hanoun killed 15 people on Tuesday, including relatives of Al Jazeera journalist Hossam Shabat, who has been reporting from the north.

Mohamed Shabat and his wife Dima, both volunteer doctors at Kamal Adwan Hospital, were killed along with their daughter Eliaa, according to hospital director Hossam Abu Safiya.

Strikes in central and southern Gaza killed another 20 people, according to Palestinian medical officials.

The Israeli military had no immediate comment on the strikes.

Hours earlier, the Israeli military announced a small expansion of the humanitarian zone, where it has told Palestinians evacuating from other parts of Gaza to take refuge. Hundreds of thousands are sheltering in tent camps in and around Muwasi, a desolate area with few public services.

Israeli forces have also been besieging the northernmost part of Gaza since the beginning of October, battling Hamas fighters it says regrouped there.

With virtually no food or aid allowed in for more than a month, the siege has raised fears of famine among the tens of thousands of Palestinians believed to still be sheltering there.

The United States gave Israel a 30-day deadline — that expired this week — to improve the humanitarian situation in Gaza, calling on it to allow at least 350 truckloads to enter each day, among other things.

So far, Israel has fallen short. In October, 57 trucks a day entered Gaza on average, and 75 a day so far in November, according to Israel’s official figures. The United Nations puts the number lower, at 39 trucks daily since early October.

Israel has announced a flurry of measures in recent days to increase aid, including opening a new crossing into central Gaza and some small deliveries of food and water to the north. But so far the impact is unclear.

Many Palestinians there fear Israel aims to permanently depopulate the area to more easily keep control of it. On Tuesday, witnesses told The Associated Press that Israeli troops had encircled at least three schools in Beit Hanoun, forcing hundreds of displaced people inside to leave.