The EU's top diplomat called Monday for a 2024 ceasefire to be upheld to prevent Lebanon from "sliding into chaos," saying Israel's "heavy-handed" response to Hezbollah attacks was further destabilizing the region.

President Joseph Aoun on Monday accused Hezbollah of working towards the "collapse" of the state, after the pro-Iran group launched an attack on Israel, expressing Beirut's readiness for "direct negotiations" with Israel.

Begun after Hezbollah launched rockets towards Israel a week ago, Israel's bombing campaign has killed at least 394 people and displaced more than half a million.

Hezbollah on Monday welcomed the selection of Mojtaba Khamenei as Iran's new supreme leader, pledging allegiance after his predecessor and father Ali Khamenei was killed in U.S.-Israeli attacks.

"We in Hezbollah extend our warmest congratulations and blessings on this occasion. We renew our pledge of loyalty to this blessed approach and our steadfastness on the path of allegiance," the group said in a statement.

French President Emmanuel Macron arrived in Cyprus on Monday to discuss regional security, while Paris deployed warships to the Mediterranean and the U.S.-Israeli war on Iran stretched into a second week.

Parliament on Monday postponed legislative elections, initially due to be held in May, by two years, according to a statement from the parliament speaker, due to the war between Israel and Iran-backed group Hezbollah.

MPs convened on Monday including Mohammad Raad, head of Hezbollah's parliamentary bloc, even as Israeli warplanes flew above the nearby southern suburbs of Beirut.

Israel's first responders said one person was killed by shrapnel as several blasts rocked central Israel Monday, shortly after the military reported detecting new missiles launched from Iran.

"After performing resuscitation efforts, we had to pronounce the death of a man, approximately 40 years old," Magen David Adom said in a statement, adding that the death occurred at a construction site in central Israel.

The Israeli army started a new wave of strikes on Dahieh on Monday, after it warned it would target branches of Al-Qard al-Hassan, a financial firm linked to Hezbollah.

Two Israeli airstrikes targeted a branch of Al-Qard al-Hassan in Sfeir in Beirut's southern suburbs. Other strikes targeted branches of the firm in other areas including Haret Hreik, Beer al-Abed, and Burj al-Barajneh.

Hezbollah said early on Monday it was fighting Israeli forces who landed in eastern Lebanon by helicopter across the Syrian border, the second such operation since the outbreak of the latest conflict with Israel.

During the day, the group claimed responsibility for at least 10 attacks against Israel and its forces, including against troops that advanced into Lebanese border towns and a missile salvo on an air base in Haifa.

Iran's ruling clerics on Sunday appointed the slain leader's son, Ayatollah Mojtaba Khamenei, as the country's new supreme leader, defying threats from the United States and Israel to oppose him.

Israel struck the Palestinian refugee camp of Ain al-Hilweh in southern Lebanon on Sunday, Lebanese state media reported, amid the new war between Israel and Iran-backed Hezbollah.