It's all about putting the Jews back in their proper place in the Muslim world's version of a Jim Crow sociopolitical order: the Dar al dhimmi, the subordinated world of the outsiders: punishing extortionate poll taxes, pogroms, walk in the street not the sidewalk, Jewish witness testimony worth half of a Musliim's, etc.
They define occupied land as from the river to the sea. All of it is Muslim waqf, inheritance. Once any land has become Muslim, they never accept reversion to dhimmi sovereignty.