The dependence of European gas imports on Russia has led European countries to consider different ways to compete with Russia. One of the most important of these is the Caspian and Middle East countries, which delivers gas to Turkey via the southern corridor and then to other European countries. The region's gas supplies are still in dispute. One of the main concerns of European countries is to choose the best option for gas supply for this project. Currently, not only Azerbaijan exports to Europe, but other countries are also interested in European countries due to concerns over its ability to continue exporting. Therefore, in addition to Azerbaijan, Iran, Turkmenistan and Iraq are among the main gas supply options in the region. In the present article, with the approach of cooperative game theory, different gas export coalitions from this region to Europe have been investigated and bargaining power of all countries has been obtained through Shapley solution. The results show that Turkey plays the most important role in the gas pipeline network as a transistor, because without this country no area would be able to export gas to Europe. It also appears that the pipelines could increase the bargaining power of one country, which could increase gas transmission capacity without the need for a country other than Turkey.

中文翻译：

---

从南部走廊到欧洲的天然气出口潜在联盟的可能性：合作博弈论框架

欧洲天然气进口对俄罗斯的依赖导致欧洲国家考虑以不同方式与俄罗斯竞争。其中最重要的国家之一是里海和中东国家，它们通过南部走廊将天然气输送到土耳其，然后输送到其他欧洲国家。该地区的天然气供应仍存在争议。欧洲国家的主要关注点之一是为该项目选择最佳的供气方案。目前，不仅阿塞拜疆向欧洲出口，其他国家也因为担心其继续出口的能力而对欧洲国家感兴趣。因此，除阿塞拜疆外，伊朗、土库曼斯坦和伊拉克是该地区主要的天然气供应选择。在本文中，采用合作博弈论的方法，调查了该地区到欧洲的不同天然气出口联盟，并通过沙普利解决方案获得了各国的议价能力。结果表明，土耳其作为晶体管在天然气管网中扮演着最重要的角色，因为没有这个国家，任何地区都无法向欧洲出口天然气。管道似乎还可以增加一国的议价能力，这可以增加天然气输送能力，而无需土耳其以外的国家。