The American Thinker has this useful piece by Peggy Shapiro summarising the case for Jewish refugees from Arab Countries:
Enter “Right of Return” on any search engine and you will get some variation of the Palestinian claim that Palestinian Arabs who left Israel in 1948 and all of their descendants have the an “inalienable right” to return to Israel. The estimate of the number of Arab refugees (when five Arab nations attacked the new government of Israel in May, 1948) varies, but according to the U.N.’s report in 1949, there were approximately 700,000 refugees.
Today, Palestinians assert the “Right of Return” for around 4.5 million people, most of whom have never set foot in Israel.
On March 19, 2008, a group of Jewish representatives addressed the United Nations Human Rights Council to present The Case for Rights and Redress on behalf of refugees caused by the Arab-Israeli conflicts. These are not the ones who hold the title of “refugees for the longest period of time in recorded history” and who have been supported by UNRWA welfare in “refugee camps” for the past sixty years. No, the U.N. address was for Justice for Jewish Refugees from Arab Countries, the 850,000 Jews who were expelled from their homes in Arab lands. The report refers to documents recently uncovered in UN archives that “reveal a pattern of state-sanctioned oppression that precipitated the mass exodus of Jews from 10 Arab countries.”