Jim,
"UNWRA refugee figures 5,248,185"

These refugees were not ethnically cleansed from Israel.
They are the descendants of those displaced by the creation of Israel in 1948, many voluntarily in the expectation of returning behind victorious Arab armies to become the beneficiaries of the newly deceased Jews' properties.

A greater number of Jews were displaced then, but they were quickly settled in the tiny and overcrowded sliver of land that is Israel.

Millions of ethnic Germans were displaced fro E.Europe in 1945, the greatest number of refugees ever created.
All quickly settled.

The Palestinian's Arab brothers refused to settle them or give them any citizenship rights so that they and their numerous descendants are still refugees well over half a century later.

No ethnic cleansing of Arabs from Israel.
You lied Jim.