New Delhi, March 12 -- Chagos is one of the world's longest-running unresolved issues of decolonization, whose return to Mauritius has been championed by India for decades. Prime Minister Narendra Modi's visit to Mauritius this week can help see the campaign to its logical conclusion.

Where is the Chagos Archipelago?

The Chagos islands or Chagos Archipelago is a group of 58 atolls in the Indian Ocean, lying around 2,200km north of Mauritius. Most of these atolls are tiny submerged reefs, but there's one that stands out-Diego Garcia. The largest of the atolls, Diego Garcia is a major US airbase and of strategic importance to the US and North Atlantic Treaty Organization.

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