After Israel’s invasion of Lebanon in 1982, Israeli-US tensions grow. Renewed American worries of Islamic terrorism caused by the bombing of the American Marine barracks in Beirut, push the Reagan administration to deepen its strategic relationship by expanding the 1981 MOU with Israel. It calls for the creation of a Joint Military Group and a group to oversee threats posed by the Soviet Union. Together the two countries create a high level planning forum for collaborative strategic action. (source)