This latest volume in "The Idea of Iran" series concentrates on the Sasanian period. Seizing power from the previous dynasty - the Parthians - the Sasanians ruled Iran and most of the ancient Near East from 224 until 642 CE. They are particularly fascinating because of their adherence to Zoroastrianism, an ancient dualistic Iranian religion named after the prophet Zarathustra (or, in Greek, Zoroaster). The Sasanians expressed the divine aspect of...