I'm still trying to figure out how Israel is stealing "Palestinian land" when there were no Muslims at all in ancient Israel.
It's rather like trying to figure out why the land should belong to Jewish Europeans when Judaism didn't exist in either ancient Europe or ancient Canaan (before the Hebrew invasion).
Because that is who the land was given to by the Owners under their mandate. Just as the previous owners asked the European Jews to migrate to the land and work it to make it fertile, in return they could buy the land and hold title to it. The "Palestinians" were also made the same offer and refused it because it meant paying taxes and serving in the military. In effect forfeiting all rights to claim the land at a later date.