JERUSALEM >> Israeli airstrikes across Lebanon killed dozens of people on Sunday as the Hezbollah militant group sustained a string of deadly blows to its command structure, including the killing of its overall leader, Hassan Nasrallah.

Hezbollah confirmed Nabil Kaouk, the deputy head of the militant group’s Central Council, was killed Saturday, making him the seventh senior Hezbollah leader slain in Israeli strikes in a little over a week. They include founding members who had evaded death or detention for decades.

Hezbollah had earlier confirmed that Ali Karaki, another senior commander, died in Friday’s strike that killed Nasrallah. Israel says at least 20 other Hezbollah militants were killed, including one in charge of Nasrallah’s security detail.

Meanwhile, Israeli warplanes and drones carried out deadly strikes across Lebanon on Sunday. Two consecutive strikes near the southern city of Sidon, about 28 miles south of Beirut, killed at least 32 people, the Lebanese health ministry said. Separately, Israeli strikes in the northern province of Baalbek Hermel killed 21 people and injured at least 47.

The Israeli military said it also carried out another targeted strike on Beirut, but did not immediately provide details.

Lebanese media reported dozens of strikes in the central, eastern and western Bekaa and in the south, besides strikes on Beirut. The strikes have targeted buildings where civilians were living and the death toll was expected to rise.

In a video of a strike in Sidon, verified by The Associated Press, a building swayed before collapsing as neighbors filmed. One TV station called on viewers to pray for a family caught under the rubble, posting their pictures, as rescuers failed to reach them. The Lebanese health ministry reported at least 14 medics were killed over two days in the south.

President Joe Biden said Sunday he would speak with Israeli Prime Minister Benjamin Netanyahu, and believes that an all-out war in the Middle East must be avoided.

“It has to be,” Biden told reporters at Dover Air Force Base in Delaware as he boarded Air Force One for Washington.

Meanwhile, wreckage from the strike on Friday that killed Nasrallah was still smoldering. AP journalists saw smoke over the rubble as people flocked to the site, some to check on what was left of their homes and others to pay respects, pray or simply to see the destruction.

In response to the dramatic escalation in Israeli strikes on Lebanon, Hezbollah significantly increased its attacks in the past week, from several dozen to several hundred daily, the Israeli military said. The attacks injured several people and caused damage, but most of the rockets and drones were intercepted by Israel’s air defense systems or fell in open areas.

The army says its strikes have degraded Hezbollah’s capabilities and the number of launches would be much higher if Hezbollah had not been hit.

Also on Sunday, the Israeli military said dozens of its aircraft struck Houthi targets in Yemen in response to a recent attack on Israel. The military said it targeted power plants and sea port facilities in the city of Hodeida.

The Houthis launched a ballistic missile attack on Ben Gurion airport on Saturday when Netanyahu was arriving. The Houthi media office said the Israeli strikes hit the Hodeida and Rass Issa ports, along with two power plants in Hodeida city, a stronghold for the Iranian-backed rebels. The Houthi-run Health Ministry said the strikes killed four people and wounded 40 others.

The Houthis claimed they took precautionary measures ahead of the strikes, emptying oil storages in the ports, according to Nasruddin Ammer, deputy director of the Houthi media office. He said in a post on X platform the strikes won’t stop the rebels’ attacks on shipping routes and on Israel.

Meanwhile, White House national security spokesman John Kirby said Israel’s airstrikes in Lebanon had “wiped out” Hezbollah’s command structure, but he warned the group will work to rebuild it.

“I think people are safer without him walking around,” Kirby said of Nasrallah. “But they will try to recover. We’re watching to see what they do to try to fill this leadership vacuum. It’s going to be tough. … Much of their command structure has now been wiped out.”

Speaking on CNN’s “State of the Union,” Kirby sidestepped questions about whether the Biden administration agrees with how the Israelis are targeting Hezbollah leaders. The White House continues to call on Israel and Hezbollah to agree to a 21-day temporary cease-fire floated by the U.S., France and other countries at the recent U.N. General Assembly.