Relationship dossier
British Indian Ocean Territory
Mauritius
Relationship assessment
Mauritius disputes UK sovereignty over the Chagos Archipelago; BIOT has no independent foreign policy.
British Indian Ocean Territory toward Mauritius
Not assessedThe British Indian Ocean Territory is administered by the United Kingdom and does not conduct an independent foreign policy toward Mauritius.
Mauritius toward British Indian Ocean Territory
-35Mauritius has challenged the United Kingdom’s sovereignty over the Chagos Archipelago, including the British Indian Ocean Territory, and sought an international legal process on the territory’s decolonization.
Overall relationship
Not assessedHow to read these scores
Scores are rough judgments, not objective measurements or current verification. Directional scores describe government policy and conduct, not public opinion. The overall score is an independent estimate, never an average.
- −100
- Extreme sustained hostility
- −50
- Substantially adversarial
- 0
- Mixed or neutral, supported by knowledge
- +50
- Substantially cooperative
- +100
- Exceptionally close sustained partnership
“Not assessed” means there is no recorded score. Pair existence makes no claim about diplomatic recognition or established relations.
Relationship context
Overview
The British Indian Ocean Territory is administered by the United Kingdom and does not conduct an independent foreign policy. Mauritius disputes the United Kingdom’s sovereignty over the Chagos Archipelago, which includes the territory, and pursued an international legal process concerning its decolonization. This supports an assessment of Mauritius’s policy on the territorial dispute, but not of an independent BIOT government policy toward Mauritius.
Areas of tension
- Mauritius’s claim to sovereignty over the Chagos Archipelago conflicts with the United Kingdom’s administration of the British Indian Ocean Territory.
Key developments
The International Court of Justice issued an advisory opinion on the legal consequences of the separation of the Chagos Archipelago from Mauritius during decolonization.
Major uncertainties
- The scope of direct Mauritian government engagement with BIOT institutions is unclear.
- The practical implications of arrangements concerning sovereignty and the Chagos Archipelago are uncertain.