A History of Israel’s Previous Invasions of Lebanon

Israel has invaded Lebanon three times before. On each occasion, it said its aim was to secure its northern frontier and stop militants from launching attacks across the border. And each time, the invasion had unforeseen consequences and achieved less decisive results than Israel’s military planners and political leaders anticipated.

The invasions helped fuel the destabilization of Lebanon, a country whose myriad religious sects, including Shia and Sunni Muslims, Christians and Druze, fought a 15-year civil war that drew in Syria and caused huge destruction before it ended in 1990. Lebanon has suffered from shaky governments, occasional violence and political assassinations. It currently faces a debilitating economic crisis.

“The invasions served to widen the wedge between Lebanon’s political communities, and as they are linked to the country’s sects this has only worsened sectarian tension and fueled the country’s political divisions,” said Lina Khatib, an associate fellow at Chatham House, a London-based research organization.

As Israel invades for a fourth time, here is a brief look at the history of its previous invasions.

1978: Three-Month Invasion

Israel invaded southern Lebanon in March 1978, under Prime Minister Menachem Begin, partly in response to an attack by Palestinian militants based in Lebanon who landed by sea and commandeered a bus on a coastal road north of Tel Aviv, leaving 35 Israelis and an American dead. Israeli forces captured territory up to the Litani River, a few miles from Israel’s northern border.

Israel withdrew in June, handing control of the ground it had taken to a Lebanese Christian militia and a United Nations peacekeeping force that had been established under a United Nations Security Council resolution. Lebanese officials said 1,200 people died in the invasion. Israel said it had killed 350 Palestinian militants and lost 34 of its own soldiers.

The invasion did not solve Israel’s security problems on its northern border and some critics of Mr. Begin argued that Israel had squandered international goodwill by devastating a string of villages in southern Lebanon. Other commentators noted that Arab leaders, despite voluble rhetoric, provided little practical or military assistance to the Palestinians during the fighting.