The patrilineally inheritable "right" of return of refugees, as articulated by the Palestinians and supported by UNRWA is a unique and arrogant assertion. Not only is there NO basis in law for the descendants of refugees to inherit "refugee status", the Palestinians also seem to arrogantly assert that this unique eternal right only applies to them and NO other refugee populations. Interestingly enough, in recogniton of the fact that most "Palestinans" that left pre-state Israel in '48 were themselves recent arivals from neighboring Arab countries, UNRWA only required residency in pre-state Israel from '46-48 to qualify as a "refugee." Its a ruse.
from the article: Peace Plan: Trading settler Israelis for refugee Palestinians