About 800 years ago a Jewish historian traveled Iran and determined that there were 80,000 Iranian Jews in the main cities (there seems to have been a large population in the outskirts as well). Today there are approximately 150,000 Iranian Jews worldwide. Jews in Iran have been killed or have been forcibly converted for thousands of years. A historian told me that but for the forced conversions and massacres in Iran there should have been 3-4 million Iranian Jews today.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: Iranian Jews in Israel fear for relatives in Iran if Israel attacks