The Arabs never retreat from their demands. Provide a concession and it becomes the bargaining basis for the next concession. After Israel withdrew from Lebanon, Hizbullah announced that their new demands, "return of villages in northern Israel" including Sasa. We also see what happened in Gaza. Hamas did not try to build a prosperous Gaza, they directed their weapons toward Israel. Therefore, Israel must also make maximum demands, since concession is viewed as retreat.
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: Israeli leaders are also advocates of 'Greater Israel'