Тhe 7th c. BC is considered as the period of formation and rise of the Median Empire. Meantime, economic crises, political instability, ethnic migrations, decline in military power, foreign invasions and, eventually, collapse of ancient state structures and depopulation were observed in the Armenian Highland and in Mesopotamia in the same period. These phenomena have usually occurred in the dramatic periods of the history of ancient Near East and, as a rule, were conditioned by climate change-related problems.

KeywordsMedian Empire Iranian Plateau Assyria Urartu palaeoenvironment climate changes crisis ethnic migrations depopulation.