عنوان مقاله [English]
The borders of Iran have always been changing throughout the country's several thousand years. The study of Iranian documents and historical sources shows that this change has been so vast that the influence of national sovereignty was sometimes far beyond the Iranian plateau, and sometimes limited only to a small part of the plateau. The borders have not been constant over the course of the sovereignty of a certain dynasty and have changed according to the power and weakness of the rulers of each dynasty. This means that with every victory in a war, the borders expanded and, on the contrary, with every defeat, part of the land was lost, and the borders retreated to the political core of that dynasty.