Israel had struck the outskirts of the Lebanese capital, Beirut, earlier on Sunday, prompting Iran to retaliate.
U.S. efforts for a truce in Lebanon appear to have stalled. Israel accused Hezbollah of firing at Israeli territory. Iran swiftly retaliated.
The assailant, an Arab citizen of Israel, was killed. Hamas, the Palestinian militant group, praised the shooting, but it did not claim responsibility.
Videos collected by The Times shows how the Israeli military has deployed a munition that can be extremely harmful over populated areas in Lebanon.
The latest violence between the United States and Iran threatened a cease-fire and risked further stoking tensions in the region.
The agreement places the onus on Hezbollah to halt attacks, while demanding few immediate concessions from Israel. The cease-fire could remove an obstacle in the talks between the United States and Iran.
One person was killed and dozens were injured at Kuwait’s international airport. Tehran denied it had struck the airport.
The U.N. panel met after Israel had threatened to attack southern Beirut. President Trump said later that Israel and Hezbollah had agreed not to attack each other.
A statement from Prime Minister Benjamin Netanyahu of Israel did not mention a new cease-fire, but the Lebanese government said one was taking shape.
A political fight is playing out in Iran, where the small but loud faction of hard-liners has used rallies, state media and private and public statements to try to undermine negotiations.