The first aggression was the imposition of settler
Here you can see the ADF protecting settlers who invade ...
We see here that the mere presence of Jews is considered hostility. THAT is why the Arab Palestinians see the settlements as an obstacle to peace. The existence of Jews in their midst, living next to Jews, having Jews present, having to live near Jews and interact with them is hostility.
Do you see how that is a rejection of any sort of peace? The Arab Palestinians are literally asking not to have to live with, near or next to Jews.
That is why there is protests in Nabi Saleh. That is why there is continued hostility from Gaza. That is why there is no peace treaty. Because Arabs refuse to live next to Jews.