I don't believe Iran is crazy enough to preemptively attack Israel. Iran knows if they take that path, the United States, Israel, and the rest of the world would come down heavily on them. However, if Iran entices Israel to attack first, then Iran will have the upper hand, and Iran will claim victimhood. I do agree that some in the Arab world do not like Israel; however, they don't want Iran to have a nuclear weapon either. If Israel attack Iran, I believe those countries who do not want Iran to have a nuclear weapon will join hands with Iran against Israel and the United States.