It seems to me that the Persians were more or less sympathetic (or at least Darius was)with the Jewish people. Unfortunately that great civilization was replaced by a cult of uncivilization.
There is less anti-semitism among the people of Iran than anywhere else in the middle east proper. This dating back to the days of the persian empire before the scourge of mohammed.
It is interesting to read the above styled thread as prelude to the ghastly bombing in Hareda. Is it connected? Ahmedinejad also promised a major Palestinian strike. Who knows? The stars?