1982 Lebanon War: The war begins as forces under Israeli Defense Minister Ariel Sharon invade southern Lebanon during Operation Peace for the Galilee, eventually reaching as far north as the capital Beirut.

The 1982 Lebanon War, also called the Second Israeli invasion of Lebanon, began on 6 June 1982, when Israel invaded southern Lebanon. The invasion followed a series of attacks and counter-attacks between the Palestine Liberation Organization (PLO) operating in southern Lebanon and the Israel Defense Forces (IDF), which had caused civilian casualties on both sides of the border. The Israeli military operation, codenamed Operation Peace for Galilee, was launched after gunmen from the Abu Nidal Organization attempted to assassinate Shlomo Argov, Israel's ambassador to the United Kingdom. Israeli prime minister Menachem Begin blamed the PLO, using the incident as a casus belli. It was the second invasion of Lebanon by Israel, following the 1978 South Lebanon conflict.

Israel, officially the State of Israel, is a country in the Southern Levant region of West Asia. It shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west and the Mediterranean Sea to the west. It occupies the Palestinian territories of the West Bank in the east and the Gaza Strip in the south-west, as well as the Syrian Golan Heights in the northeast. Israel also has a small coastline on the Red Sea at its southernmost point, and part of the Dead Sea lies along its eastern border. Its proclaimed capital is Jerusalem, while Tel Aviv is its largest urban area and economic centre.

A ministry of defence or defense, also known as a department of defence or defense, is the part of a government responsible for matters of defence and military forces, found in states where the government is divided into ministries or departments. Such a department usually includes all branches of the military, and is usually controlled by a defence minister or secretary of defense.