The conflict began when Arab States attacked the newly formed Jewish State to gain everything and they lost.
What Country did Israel steal land from? Gaza was occupied territory by Egypt, Golan Heights occupied territory by Syria, and the West Bank was occupied territory by Jordan. They collectively lost in the war that they started against Israel. That did not make the disputed territories a Country. Palestinian Arabs had the opportunity to become a country, but they blew every opportunity, and lost several more conflicts that they themselves started.
Every last Jew was removed from Gaza 2005 and it appeased no one, and within weeks, Hamas rockets began to rain down on Israel. Lesson learned?