It all comes down to who really left in the first place. That would be the Israeli. When the Israeli left, the Palestine rightfully took over. The Israeli came back forcefully yet the Palestine were already there. Therefore, the Palestinians deserve the right to the land.
I believe Israeli deserves the land, and here are some of my reasons. First off, the Jews settled in the land first. Right off the bat, that's one of the BIG reasons they have the right to the land. Another reason would be, when the Jews went to war with the Palestine, the Jews actually ended up winning, giving them the right to own the land. Both sides wanted peace, but kept fighting. The result, Jews won the war, allowing them to capture the land for themselves. Even when the Jews left the land, and the Palestine took over, they came back "forcefully," once again, taking over and controlling the land. My third and final reason is, the Jews stated that, "God gave us the land." If this is true, the Jews very rightfully deserve the land of Israel.