Mousethief, the term "Diaspora" started out applying only to the dispersal of Jews throughout the world. It is now a more generic term used by, among others, African Americans to describe their dispersal from their homelands.

In context here, the Palestinian diaspora from the camps would be more an absorbtion into the population around them than a true diaspora into the world at large. As the Jews of the world have not had a homeland since they were thrown out by the Romans, the only home they could aspire to was "The Holy Land." Despite propaganda to the contrary, there has always been some Jewish presence in what is now Israel.

The problem is that the ones who were displaced during the 1947-48 war in which Israel established itself, were largely displaced by their own leaders. The Palestinians who did not leave are Israeli citizens. The ones who did leave were told to get out of the way so that the all-conquering Arab armies could come through, murder the Jews or throw them into the sea and then allow the Palestinians to return to their property, enhanced by the property of the massacred Jews. Unfortunately for them, the Jews did not cooperate and get killed so they could go back to their homes. History since then has been commentary on this situation.

There is a saying on both sides: The Arabs only have to win once.