The United Kingdom and Mauritius over the sovereignty of the Chagos Archipelago, home to the strategically vital island of Diego Garcia. After decades of tension and diplomatic wrangling, the British government agreed to transfer control of the islands to Mauritius,

Britain insisted its U.S. allies were fully behind the move to hand control of the islands – home to a secretive military base — to Mauritius.

The deal that’s been announced is a rare win-win moment in international relations, with all the relevant actors able to claim a meaningful victory.