During his reign, the Kingdom of Armenia had recently declared Christianity as its official religion, thus leaving its ancient Zoroastrian heritage that it shared with Sasanian Iran. Hormizd II's reign was also marked by internal turmoil, which he successfully managed to deal with it. Hormizd II was also successful in his efforts in the west, defeating and killing the Ghassanid king in Syria. His reign was, however, cut short by the intrigues of the Iranian nobility, that killed him in a secluded place.