Israel-Gaza-Lebanon live updates: US denies giving Israel 'a pass' on Gaza

Israel Defense Forces spokesperson Avichay Adraee issued a warning to residents of 21 south Lebanon villages to evacuate their homes until further notice, warning of imminent Israeli strikes there.

Adraee said in a post on X that the villages were the site of Hezbollah military activity and warned that the IDF would "act forcefully" against targets there.

"For your safety, you must evacuate your homes immediately and move to the north of the Awali River," Adraee wrote. "For your safety, you must evacuate without delay."

"You are prohibited from heading south," he added. "Any movement south could be dangerous to your life."

Around a quarter of Lebanese territory and a quarter of all residents -- some 1.2 million people -- are under IDF evacuation orders, per United Nations analysis.

Israel has killed more than 3,000 people in southern Lebanon since Oct. 8, 2023, Lebanese authorities have said.

The Israel Defense Forces said the strike in northern Lebanon that killed dozens of people on Sunday targeted "a Hezbollah terrorist site" which was storing weapons.

Lebanese health officials said the airstrike on the village of Aalmat -- in a mainly Christian area in the north of the country -- killed 23 and injured at least six others. Seven children were among the dead, officials said. Search and rescue work was ongoing as of Sunday.

The IDF said that Hezbollah fighters "responsible for firing rockets and missiles toward Israeli territory" were "operating from the site," adding that the details of the incident "are under review."

Lebanese authorities say that Israeli strikes have killed more than 3,000 people since Oct. 8, 2023. Some 1.2 million people -- around a quarter of Lebanon's population -- have also been displaced by Israel's military campaign.

-ABC News' Dana Savir

The Israel Defense Forces said Monday it intercepted one projectile "that approached Israel from the direction of Yemen."

"The projectile did not cross into Israeli territory," the IDF said in a statement posted to X, noting that the projectile caused sirens to sound in several areas of central Israel.

Overnight, the IDF also said it intercepted four uncrewed aerial vehicles that approached Israel from the east.

-ABC News' Bruno Nota

Israeli Defense Minister Israel Katz declared on Sunday that his country has defeated Hezbollah after killing the group's leader, Hassan Nasrallah.

"We defeated Hezbollah, and the elimination of Nasrallah was the crowning achievement," Katz said during a handover ceremony at Israel's foreign ministry on Sunday.

The ceremony comes after Israel's Prime Minister Benjamin Netanyahu fired the previous defense minister, Yoav Gallant.

There is no word on how this will affect Israel's operations in Lebanon, which shows no sign of slowing.

"Now it is our job to continue the pressure," Katz said. "We will work together to materialize the fruits of this victory by ensuring that the security situation in Lebanon has changed."