Video: 'Israel Vs.The PLO -The Invasion of Lebanon 1982 Part.1' (June 6, 1982, at 7:27)

(Sunday, June 6, 1982, 11:00 a.m. Israel Standard Time; during the 1982 Lebanon War, part of the Palestinian insurgency in South Lebanon (Israeli–Palestinian conflict) and Lebanese Civil War) — The Israeli army invaded southern Lebanon by land, sea, and air today in an attack aimed at destroying the main military bases of the Palestine Liberation Organization (PLO).

Video: 'Israel Vs. The PLO -The Invasion of Lebanon 1982 Part.2' (June 6, 1982, continued)

More than 250 Israeli tanks and armored personnel carriers, as well as thousands of infantrymen, rolled past the observation posts of the United Nations peacekeeping troops in southern Lebanon at 11:00 a.m. IST and fanned out across the frontier, according to a United Nations spokesman in Beirut.

Video: 'Lebanon 1982 - Part 1 of 3'

By late this evening the Israelis had taken several PLO outposts in the craggy hills of southern Lebanon and were engaged in fierce firefights with the Palestinians for control of scores of other strongholds along the 33-mile front, stretching from the port city of Tyre to the foothills of Mount Hermon, the United Nations spokesman said.

Video: 'Lebanon 1982 - Part 2 of 3'

Israel Defense Forces (IDF) invaded southern Lebanon, after repeated attacks and counter-attacks between the PLO operating in southern Lebanon and the IDF that had caused civilian casualties on both sides of the border.

Video: 'Lebanon 1982 - Part 3 of 3'

The military operation was launched after gunmen from Abu Nidal’s organization attempted to assassinate Shlomo Argov, Israel’s ambassador to the United Kingdom. Israeli Prime Minister Menachem Begin blamed Abu Nidal’s enemy, the PLO, for the incident, and used the incident as a casus belli for the invasion.

Video: 'The Eighties - NBC 1980's Retrospective (1989)' (1982 Lebanon War at 8:07)