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Iraq's geographical location is such that many seasonal and permanent rivers of the surrounding countries flow into it. Iraq itself lacks sufficient sustainable water resources to meet its development and infrastructure needs. Hence, the future of Iraq's security and development depends on the hydropolitical approach of the surrounding countries. Over the past decade and a half, Iran has controlled the outflow of water from the western borders of the country as part of a plan to organize and develop water and soil resources in the west of the country, which has reflected on the volume of water entering Iraq have been. The present article is of a practical nature, the methodology of descriptive- analytical text and data- based theory method is used and the required input is used by the library method and the use of data-based theory is based on the hypothesis that hydropolitics is policy-oriented. Iraqi foreigners will be more reflected in their interaction with the Islamic Republic of Iran. The results showed that with regard to the increasing limitation of water resources, increasing water consumption and reducing the inflow of Iranian border rivers to Iraq, which is associated with a threat to part of the country's water and food security, hydropolitics in the form of tension in the direction of Iraq's foreign policy in dealing with the Islamic Republic of Iran will be more reflected.

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The aim of the present study was to estimate growth and mortality parameters and length-weight relationship of Barilius mesopotamicus populations in difrent Iran basins. For this purpose, 460 fish specimens from Diala, Jarrahi, Karun, Karkheh and Bushehr basins and subbasins, including Zardmashin, Aalaa, Jarrahi, Dez, Shur, Meymeh, Changooleh, Kangir, Doyrej, Ahram, Zohreh, Kheirabad, Karzin, Shahpur and Darolmizan rivers, were sampled. Total length, fork length and standard length were measured by a digital caliper (cm) and total weight by a digital scale (g). Also, some scales were prepared and studied for age determination. The length-weight relationships showed that population from Bushehr, Jarahi, Karun and Dila, had negative allomeric growth pattern while Karkheh population had an isometric growth pattern. The highest estimated total length and weight was 9.2 cm and 5.4 g. Age of the fish was between 0⁺ and 2⁺. The highest asumptetic total length was observed in Diala basin with Bertallanfy equation of L_t= 9.22[1-e^-1.3(t+0.07)]. The condition factor was about 0.5. Considering body indices, Bushehr, Jarahi, Karun and Diala had a better condition, and Karkheh population had a lower index, probably indicating a poorer condition in this river.