Leaflets urging residents in southern Lebanon to
leave their homes and move north of the Litani River, 25 miles (40 kilometers) from the Israeli border, have been dropped in the region, the IDF said.
http://www.cnn.com/2006/WORLD/meast/07/21/mideast/index... More to the point, an officer in Israel's Northern Command, who dealt with Haddad extensively, claims that the Lebanese major made perfectly clear to the Israelis that "We will cooperate with you, but there are two subjects which are taboo - our land and our water" (interview, October 1991). Nevertheless, the then Chief of Staff Ezer Weizman (Chaim Weizmann's nephew) was berated by a member of the Knesset after the operation for not seizing the Litani: "Your uncle knew at the time the historic significance of the Litani," M.K. Cohen shouted (cited in Hof 1985, 24).
In the 1982 operation, the Litani was again the initially stated objective
http://www.unu.edu/unupress/unupbooks/80859e/80859E07.h... From the Nile to the Euphrates - that's what they want and they don't care who dies to get it.