You don't believe the Israelis when they say it, so maybe you'll believe the PA Chairman Abbas, or these 12 others?
Multiple countries attacked Israel.
Those armies told the Arabs in Israel to leave.
Those armies, who some of them sided with, lost.
Would any other people who did this have a valid claim on the land, or a "right of return?"
(The descendants of those who trusted the Jews are today just under 2 million Arab-Israelis, living IN Israel, who are students at universities, doctors, lawyers, judges, business owners, Israeli politicians, etc.)
As for the others, the real catastrophe was all the lies, being scared of the Jews, and not listening to their offer to stay despite Israel having been attacked. Oh, and then the U.N.'s partitioned country of Palestine might now exist too, but for decades they said no to every peace plan, and kept attacking and trying to get the whole land.
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