https://www.algemeiner.com/2020/03/12/the-palestinian-right-of-return-is-really-about-destroying-israel/
On January 28, President Trump revealed his administration’s long-awaited Israeli-Palestinian peace plan. As several commentators noted, the proposal explicitly states that there shall be no “right of return” — a key phrase with a very particular meaning that few analysts have carefully parsed out.
The Palestinian Authority (PA), the entity that governs the Palestinian areas of the West Bank, has continually demanded a “right of return” in nearly every negotiation that has occurred since the PA was created a quarter century ago. To understand the origin of this so-called “right,” one must first understand the history.
In 1947, the United Nations General Assembly adopted a partition plan for British-ruled Mandatory Palestine: Resolution 181, which called for the establishment of both a Jewish state and an Arab state. Arab states and Palestinian Arab leaders rejected it out of hand, choosing war over statehood. They violated Resolution 181 by attacking the fledgling Jewish nation. In the combat that followed, hundreds of thousands of Arabs and Jews fled. In some cases, they were forced from their homes in Mandatory Palestine and beyond.
Estimates of the original number of Arab refugees vary. The British Foreign Office suggested the number was between 600,000 and 760,000. A 1950 report by the UN Conciliation Commission for Palestine endorsed an estimate of 711,000 refugees by an “expert of the Statistical Office of the United Nations.”
Many of these initial Arab refugees were set up in camps in Arab nations that typically refused to grant them citizenship or equal rights. Rather, they were treated as political pawns and overseen by the UN Relief and Works Agency (UNRWA).
In retaliation, some Arab nations punished their native Jewish populations by seizing their property and expelling them or forcing them to flee under threat of death or torture. Of the more than 800,000 Jewish refugees, nearly 600,000 settled in Israel.