 The empire was also at the same time invaded on all fronts; by the Göktürks in the east, and by Khazars in the west, who raided Armenia and Adurbadagan.The Sasanian army had been heavily weakened due to the war with the Byzantines and internal conflict.The circumstances were so chaotic, and the condition of the nation so alarming, that "the Persians openly spoke of the immanent downfall of their empire, and saw its portents in natural calamities."