I would like to add that there's two components in the Israeli-Arab(Palestinian) conflict. One is the legal and moral perspective which we in the West tend to (naively) focus on, but another is the practical struggle for survival and try to win. In the Middle East it's not so much about who is right or who is wrong, it's very much a battle of give and take. The strongest and wittiest simply wins. If you give your finger to your opponent you risk losing your hand. All decisions on both sides of the conflict are more or less based on this practical struggle rather than on morals.
Yes, we can refer to Jewish history in the territory, Arab history in the territory, the British mandate, the UN partition plan, 1948 borders, 1967 borders, Camp David agreements, Oslo accords, secret peace talks, UN resolutions, international law, human rights and bla bla bla. You have so many arguments that everyone values differently, and we can exchange these arguments back and forth, but in the long run what really matters and what will decide the outcome of the conflict is who will outsmart the other, who is the strongest.
