Abstract This article examines the implications for the U.S. military base in Diego Garcia, located in the Chagos Archipelago, in the event that sovereignty of the atoll is ceded from the U.K. to Mauritius. Diego Garcia has become a critically important military base, facilitating U.S. power projection into the Indian Ocean, Middle East and Africa. The legality and future of British sovereignty over the atoll was challenged in 2019 in both the International Court of Justice and United Nations General Assembly. This article finds that Mauritian sovereignty of Diego Garcia would have considerable adverse consequences for U.S. military activity, potentially prohibiting many of the core functions the facility currently performs, as under U.K. sovereignty. Further, this article examines the strategic utility in Diego Garcia for the U.S. and U.K. governments, which demonstrates why these two nations are willing to endure considerable reputational costs and international backlash for retention of the atoll.

中文翻译：

---

毛里求斯对查戈斯群岛的主权？从英美角度看迭戈加西亚的战略意义

摘要 本文探讨了如果环礁的主权从英国割让给毛里求斯，对位于查戈斯群岛的迪戈加西亚的美国军事基地的影响。迪戈加西亚已成为一个至关重要的军事基地，促进了美国向印度洋、中东和非洲的力量投射。2019 年，国际法院和联合国大会都对英国对该环礁主权的合法性和未来提出了质疑。本文发现，毛里求斯对迪戈加西亚的主权将对美国的军事活动产生相当大的不利影响，可能会禁止该设施目前在英国主权下执行的许多核心功能。此外，本文研究了美国和英国在迪戈加西亚的战略效用