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China has launched the Silk Road Rehabilitation Project, a "one-way belt project," as a comprehensive regional project. The main goal of this project is to enhance the level of development of the countries between the eastern and western borders of Eurasia by facilitating regional cooperation and developing the infrastructure of the transit countries. The project has two routes: the Silk Road Economic Belt and the 21^st Century Maritime Silk Road. The one-way belt project has various geopolitical, economic, political and commercial dimensions. Areas of non-economic cooperation within the framework of this project include: ensuring the security of trade routes, strengthening counterterrorism cooperation at the regional level, designing mechanisms for resolving disputes over land and sea disputes, developing marine resources, and cooperating in the field of environmental protection and increasing in cultural exchanges. This study using the descriptive- analytic method explains the geopolitical position of Chabahar port in China’s Maritime Silk Road in the 21^st Century.

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As an important country in West Asia, Turkey has an influential position on Iran's foreign policy, and considering the bilateral and trans-regional relations in the relations between the two countries, it can be very important from a geopolitical point of view. Developments in recent years in Turkey have been mainly related to the foreign policy of that country. Relations between Turkey and Iran have undergone many changes throughout history. The two countries are considered as powerful non-Arab countries in the region that have common geographical and cultural features and do not consider each other as an existential threat. In recent years, political differences between the two countries over Syria and sometimes Iraq have led to political disputes between them. This scientific study examines the impact of Turkey's geopolitical actions in Iraq and Syria on reducing Iran's regional influence. The research method is descriptive-analytical, it is descriptive because it describes Turkey's geopolitical actions in Iraq and Syria and is analytical. This is because it expresses the impact of these actions on reducing Iran's regional influence. The method of collecting information is library, based on the use of relevant letters, reports, information and valid data. The results show that although Turkey's geopolitical actions have caused conflicts between the two countries, the maturity of the two countries' diplomacy and some similarities have led to the stability of relations.

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Introduction
One of the centers of regional crisis is Afghanistan in the east of Iran. This country has common cultural, social, religious and political structures with Iran, but due to the weakness of political structures, it has been the center of geopolitical competition of regional and global powers. Due to its geographical proximity on the one hand and the competition of the powers, it is one of the geopolitical regions that can have many effects on Iran's regional actions. Therefore, Iran is bound to play a geopolitical role in this region. One of the most important reasons for the importance of Iran's role in the East, especially in today's Afghanistan, is activities of the groups that are religiously sympathetic to the Taliban. Therefore, national interests require Iran to prevent these groups from approaching radicalism through regional de-escalation. During the sanctions period, the Afghan market is one of the main markets for Iran's exports, the dependence of Sistan and Baluchistan province in eastern Iran on Hirmand River can be better achieved by maintaining the relationship with the Taliban, and finally, being present in Afghanistan prevents the country from turning into the backyard of Iran's regional and extra-regional rivals.

Methodology
The research method is applied in terms of purpose and is descriptive-analytic in terms of method and nature. Data gathering procedure is based on library findings. The statistical population of the research consists of experts and professors of the university and fields related to geopolitics, geostrategy and geoculture, and the sample size was determined based on Cochran's model of 50 people. In order to analyze the findings, the average test was used in SPSS software.

Results and discussion
The factors of Iran's role-playing in the geopolitical region of the East with an emphasis on Afghanistan are subject to relevant factors and variables at three internal, regional and extra-regional "global" levels. In this context, the ambiguous future indicators of power in Afghanistan and Iran's capabilities in playing its role, ethnic diversity in Afghanistan and the Pashtuns' role in power and the roles played by the Islamic Republic with regard to its civilizational characteristics in Afghanistan and playing a role, the Islamic Republic of Iran is considered as one of the main and most important factors in the geopolitical region of the East in terms of building universities and scientific centers in Afghanistan and Pakistan and producing knowledge and increasing general literacy in Afghanistan, and the influencing factors. The role of the Islamic Republic of Iran in the fields of increasing the construction of cultural bases such as Basij, seminaries, knowledge centers and cultural centers, etc. is prominent. Preventing illegal immigration on the borders of Pakistan and Afghanistan has not been successful. In the context of evaluating Iran's role-playing achievements in the direction of securing the national interests of the Islamic Republic of Iran in the East, 12 indicators were presented, and the results showed that factors such as Iran's achievements in solving hydropolitical disputes with Afghanistan, Iran's achievements in the construction of the Chabahar Free Zone, Iran's achievements in the field of spreading the Persian language in Afghanistan and Iran's roles in preventing the spread of the Salafist ideology of Arab countries such as Saudi Arabia are the most achievements for Iran in the East, and finally factors such as Iran's role in preventing the transit of narcotics on the borders of Pakistan and Afghanistan and Iran's role in preventing arms smuggling in the borders of the peripheral east are not considered as the achievements of the Islamic Republic of Iran in the peripheral east.

Conclusions
The results showed that Iran's role-playing in the geopolitical region of its peripheral east, with an emphasis on Afghanistan, will be subject to relevant factors and variables at three internal, regional and extra-regional "global" levels, and the greatest share of this role-playing includes extra-regional factors. Also, factors such as Iran's achievements in the field of settling hydropolitical disputes with Afghanistan, Iran's achievements in the field of establishing the Chabahar Free Zone, Iran's achievements in the field of spreading the Persian language in Afghanistan and Iran's roles in preventing the spread of Salafist ideology in Arab countries such as Saudi Arabia will bring the most achievements for Iran in its peripheral east.

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Pacts can assist member countries in achieving foreign policy objectives and securing national interests. These pacts have diverse and numerous functions, influenced by geopolitical indicators to varying degrees. Naturally, their impact extends across national, local, regional, and transregional levels. Therefore, this research focuses on examining and analyzing the geopolitical indicators used in power calculations. The functions of pacts can manifest in significant political, security, economic, commercial, cultural, and social dimensions, and they can be applied in regional pacts.
This analytical-descriptive study relies on library resources, documents, articles, and relevant websites for data collection. Additionally, a structured questionnaire was prepared to gather experts' opinions on the analysis of geopolitical indicators for membership in regional pacts. Finally, the collected data underwent analysis using SPSS software and relevant tests. The study also strives to weigh countries' membership in regional pacts based on political, security, economic, commercial, cultural, and social components, and the impact of geopolitical indicators at various levels on the countries' membership process to regional pacts.