The Palestinians recognized Israel's right to exist at the time of the Oslo accord in the mid 1990's.  In return Israel was to halt settlement building.  The number of settlers in the West Bank has doubled since that time.   Hamas has agreed to a 50 year truce with Israel.  Isn't that enough.  My guess is that after 50 years of living in peace and being able to rebuild Gaza, Hamas wouldn't have much support to resume resume their terrorist activities.  Support for terrorism goes way down when people have a decent living, freedom and dignity.