LONDON (Reuters) -Britain signed a multi-billion dollar deal on the future of the Chagos Islands with Mauritius after a last-gasp injunction was overturned, securing itself a lease for the U.S.-UK Diego Garcia air base for the next century.

Britain signed a multi-billion dollar deal on the future of the Chagos Islands with Mauritius after a last-gasp injunction was overturned, securing itself a lease for the U.S.-UK Diego Garcia air base for the next century.

The governments of Britain and Mauritius have reached a final deal to settle the future of the Chagos Islands, the contested archipelago in the middle of the Indian Ocean that's home to a strategically important U.