Like I said, bb, I have seen nothing to indicate that any of the Jews in Israel with to return to their previous homes in Arab States. Its a moot point because...

that is not the case with the Palestinian refugees who have no home, what-so-ever. They are refugees and have a right to return whether or not they fled or left willingly to escape a very real threat to their families.

...and yes, nuclear warfare is a threat to everyone. If, however, Palestinians were given the right to return, the threat would be greatly diminished.