What are the halakhic parameters in dealing with the ’Palestinians’ (I’m only referring to the majority of West Bank arabs, who are innocent) in relation to the Scriptures [which say that Hashem gave us this Land]?

ב"ה The Torah gives the authority to one sovereign nation over the Land of Israel. The nation is the Nation of Israel the descendants of Abraham, Isaac and Jacob. This is repeated excessively in the Torah. In regard to the Arabs living in Israel, they have their individual rights to their privately owned homes and fields, however they have no national rights to the Land of Israel. All the best.