Multinational Force in Lebanon

The Multinational Force in Lebanon (MNF) was an international peacekeeping force created in August 1982 following a 1981 U.S.-brokered ceasefire between the Palestine Liberation Organization (PLO) and Israel to end their involvement in the conflict between Lebanon's pro-government and pro-Syrian factions. The ceasefire held until June 3, 1982, when the Abu Nidal Organization attempted to assassinate Shlomo Argov, Israel's ambassador to London.

Source: Wikipedia — Multinational Force in Lebanon (CC BY-SA 4.0)