In failing to adhere to international law, the United Nations has, as its principle violator, primarily itself.
The real dispute is not about a “Palestinian State.” It is about who has the right to the entire area. This is also the reason the Palestinians will never sign an “end of conflict” agreement.
The Palestinian Authority (PA) continues to depict a world without Israel. This is to be done in stages, a “salami” tactic, by which any land acquired is to be used as a forward base from which to take the rest. The Phased Plan was never rescinded.
Hamas, with whom the PA is now aligned in a “Unity Government,” takes the Phased Plan a bit farther. Hamas, in its Charter, advocates not only displacing Israel, but killing all the Jews worldwide as well, or genocide. This too has never been rescinded.