The category of the sphere of influence can explainsome contemporary international processes. To define that category, however,much stress is laid on great powers’ exclusivity within their spheres ofinfluence. The author takes into consideration the thesis of theaforementioned exclusivity’s erosion. Because foreign military bases areessential instruments of spheres of influence due to their strong impact onsecurity policy, it is worth investigating their presence in this context. Specifically,the author carries out an in-depth study of military bases of more than onemajor power in one host country. Further, the article discusses the extent towhich the gradual erosion of exclusivity undermines the significance of spheresof influence as such. In conclusion, the author states that the case ofDjibouti undermines the idea of great power exclusivity. Yet, other cases donot provide sufficient evidence on such deep transformation because of eitherlimited periods of bases’ existence or great power cooperative attitudes.

中文翻译：

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外国军事基地作为势力范围工具的意义

势力范围的范畴可以解释一些当代国际进程。然而，要定义这一类别，主要强调大国在其影响范围内的排他性。作者考虑到上述排他性被侵蚀的论点。由于外国军事基地因其对安全政策的强烈影响而成为影响范围的重要工具，因此值得在此背景下调查它们的存在。具体而言,笔者对一个东道国的多个大国的军事基地进行了深入研究。此外，本文还讨论了排他性的逐渐削弱在多大程度上削弱了影响范围本身的重要性。最后，作者指出，吉布提的案例破坏了大国排他性的观念。