What does PORAN stand for? 

poran

Boran (also spelled Buran, Middle Persian: ; New Persian: پوران‌دخت, Pūrāndokht) was Sasanian queen (or banbishn) of Iran from 630 to 632, with an interruption of some months. She was the daughter of king (or shah) Khosrow II (r. 590–628) and the Byzantine princess Maria. She is the second of only three women to rule in Iranian history, the others being Musa of Parthia, and Boran's sister Azarmidokht. In 628, her father was overthrown and executed by her brother-husband Kavad II, who also had all Boran's brothers and half-brothers executed, initiating a period of fractionalism within the empire. Kavad II died some months later, and was succeeded by his eight-year-old son Ardashir III, who after a rule of nigh two years, was killed and usurped by the Iranian military officer Shahrbaraz. Boran shortly ascended the throne with the aid of the military commander Farrukh Hormizd, who helped her to overthrow Shahrbaraz. She and her sister were the only legitimate heirs who could rule at the time. Boran inherited a declining empire that was engulfed in a civil war between two major factions, the Persian (Parsig) and Parthian (Pahlav) noble-families. She was committed to reviving the memory and prestige of her father, during whose reign the Sasanian Empire had grown to its largest territorial extent. She was however not long afterwards replaced by Khosrow II's nephew Shapur-i Shahrvaraz, whose reign was even briefer than hers, being replaced by Azarmidokht, who was a Parsig nominee. She was in turn deposed soon afterwards and killed by the Pahlav under Farrukh Hormizd's son Rostam Farrokhzad, who restored Boran to the throne, thus making her queen for a second time. During her second reign, power was mostly in the hands of Rostam, which caused dissatisfaction among the Parsig and led to a revolt, during which Boran was killed by strangulation. She was succeeded by her nephew Yazdegerd III, the last Sasanian ruler, making her the penultimate ruler of the Sasanian Empire. Albeit her two tenures of rule were shortlived, she did try to bring stability to Iran by the implementation of just laws, reconstruction of the infrastructure, and by lowering taxes and minting coins. Diplomatically, she desired good relations with her western neighbours–the Byzantines, whom she had an embassy sent to, which was well received by emperor Heraclius (r. 610–641).

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