Britain has agreed to transfer the Chagos Islands to Mauritius, resolving a longstanding dispute over colonial legacy and geopolitical interests. The agreement grants Mauritius sovereignty over the archipelago while allowing the US and UK to maintain a key military base on Diego Garcia. The deal ensures the operation of the base for 99 years, emphasizing regional security. The handover, prompted by legal rulings and global pressure, marks the end of Britain's colonial control over the islands and addresses concerns raised by the international community. The strategic importance of the base in the context of growing great-power rivalry in the Indian Ocean underscores the significance of the agreement.