The "Palestinian" cause consists of the resolution of Islamic jihadis to make the region uniformly Muslim, as demanded by their religion. Two-state solutions, the first of which was tried in 1921, have never been anything but a cover for that effort. Two-state solutions always end the same way: the Muslims accept the land offered, then immediately renew their efforts to remove the Jews from the land reserved for them.
The UN is dominated by 3rd world leaders, mostly corrupt bandits who dominate those countries in order to enrich themselves. They cooperate with the Muslims because they are alike.