Zoroastrianism, one of the three recognized religious minorities in the Islamic Republic, can claim a specific linkage with Iran since the Avestan Vendidād and its other primary religious documents were written in Iranian languages and its history has for the most part unfolded in Iran (in a larger geographical sense). The term Aryan is used in inscriptions by the Achaemenian king Darius I as a way to gloss the name of the deity Ahura Mazdā (the 'God of the Aryans'). In the Sasanian period, Iran became the name of the empire. Zoroastrian literature written under Islamic rule, reaffirms the idea of a unity between kingship and (Zoroastrian) religion, but transposes its realization into the eschatological future. After centuries of decline and discrimination, twentieth-century modernization entailed the prospect of societal reintegration for Zoroastrians; an unachieved hope under the Pahlavis, this prospect has become even more remote under the political conditions imposed by the Islamic Republic, where Zoroastrians now use the vocabulary of martyrdom to express their commitment to their homeland.