Yeah they didn’t move into someone’s house. They have had a continuous presence in the area since biblical times. There was no country of Palestine. Ever. It was always controlled by someone else. Israel came into being by accepting a deal offered. And the international community accepted them as an independent country state. There was already a civil war between the populations living there once the UN plan was passed. Some people left due to the civil war. British withdrew. Israel formed official. Arab countries attacked saying they’d kill all of the Jews there. They did not. Then they did not again. And again. They did, however, in one form or other expel their Jews to Israel.