In the current disorderly world, securing benefits and achieving optimal security for countries alone is very difficult and unavoidable. Uniting with other countries and powers is a way to advance national goals and provide benefits, and bring more guarantees for countries to survive, advance, develop and peace. The factors and conditions that lead to the unification of the countries have been a lot of controversy and debate and have been analyzed from a variety of perspectives. Although geographic proximity and geographical similarity seem to be the prelude to creating unity between countries, the Iranian-Iraqi model in the Middle East is challenging this claim. Except for a few days in the early 20th century, the two countries were in conflict with the majority of the century, even an eight-year-old war between them. So the main question of this research is how geopolitical factors contribute to the unification of countries, and what are these factors and components in the strategic relationship between Iran and Iraq? This research is descriptive and based on library and document data. The results of the study show that the components of the internal environment (economic, socio-cultural components, geographic and political components, security and geopolitics), the regional external environment and, ultimately, the global environment have affected the quality and quantity of the strategic linkage of Baghdad-Tehran. The strategic link between the two countries is a function of the accompaniment and positive function of the triangle, which itself is based on more complex components.

 Water is a strategic and rare resource that has been severely limited in recent years due to various national and transnational variables and has severely affected the areas of security, stability, development and prosperity in countries. The high impact of water in the aforementioned areas has placed water at the center of foreign policy and hydropolitical relations of many countries, including South West Asia. In recent years, despite the issue of the water crisis and its role in the relations between Iran and Iraq in scientific, political and media circles, the dimensions of this issue remain unknown and different interpretations have been given. The current research, which is of a research nature and the required inputs were collected in a library method with the aim of obtaining a qualitative understanding of the dimensions and angles of the hydropolitical relations between Iran and Iraq, is based on the fact that, in addition to identifying the content and methodological features, the research gaps To identify the existing in this field with qualitative meta-analysis method. Using the qualitative meta-analysis method, this research has examined 34 researches conducted in the period of 2014-1402 in the form of domestic scientific-research articles, dissertations and articles in prestigious international journals. The results of the research showed that a comprehensive study has not been conducted that has investigated and analyzed the various dimensions of the hydropolitical relations between Iran and Iraq. In this regard, the lack of accurate and real data and the weakness of the theoretical-cognitive foundations of the research are among the shortcomings of the research conducted in the field of relations between the two countries.

 The world today is witnessing the height of geopolitical competition; An arena where only energy resources are no longer considered as the support of countries, but the corridors have become the place of power competition and every country tries to find a place for itself in the network created by these emerging corridors. In other words, the global geopolitical trend intensifies competition over maritime bottlenecks and secures access to cross-border markets. This research is a type of "theoretical foundation" research; Its method is also descriptive-analytical and it is collected in a certain way from comparative methodology with library and internet tools. It seems that in the chronopolitical alcove in the field of Iran-Iraq relations, each of the actors is trying to position their role in the international corridors, which they pursue in line with several goals; Such as Iraq's pursuit of the "FAW Corridor" initiative, and Iran, which seeks to develop the circle of economic cooperation and take a place in the emerging alliances of the East. Although it is not possible to confidently predict the future of relations between the two countries from a chronopolitical perspective, signs of less cooperation and more competition in the relations between the two countries due to various variables and reasons can be seen on the horizon. The most important indicator of possible competition includes competition in transit routes (corridors).