Washington said the deal protected the long-term, secure and effective operation of the strategic military base.

Britain struck a deal to cede sovereignty over the Chagos Islands in the Indian Ocean to Mauritius, while keeping control of a strategically important UK-US military base for another century.Under the agreement,

The U.K. has agreed to hand sovereignty of the long-contested Chagos Islands, an archipelago of more than 60 islands in the Indian Ocean, to Mauritius, in a deal to secure the future of a strategically important U.