There shouldnt be any dispute over land ownership. God granted Title and Deed to Israel 4,000 years ago and recorded it in the best Registrar of Deeds known to man:
Genesis 15:18
In the same day the Lord made a covenant with Abram, saying, Unto thy seed have I given this land, from the river of Egypt unto the great river, the river Euphrates:
That same Title was transferred through Isaac by promise. Not Ishmael!
Somewhere I've got a pic from the website of the late Vendyl Jones, a bit of a crank, sure, but the photo, taken from space, shows the message written in the very terrain, in Hebrew characters.
Ah, here it is: