On 9 January 2020, the Secretary-General received a communication from the Government of Mauritius relating to the Chagos Archipelago.
See C.N.47.2020.TREATIES-XXVII.2 of 31 January 2020 for the text of the above-mentioned communication.
The Government of Mauritius, upon acceding to the Convention, made the following declaration:
"The Republic of Mauritius rejects the ratification of [the Convention] effected by the United Kingdom of Great Britain and Northern Ireland on 15 May 1987 in respect of the British Indian Ocean Territory namely Chagos Archipelago and reaffirms its sovereignty over the Chagos Archipelago, which form an integral part of its national territory."
Subsequently, on 27 January 1993, the Secretary-General received from the Government of the United Kingdom of Great Britain and Northern Ireland the following communication with respect to the declaration made by the Government of Mauritius:
"The Government of the United Kingdom of Great Britain and Northern Ireland have no doubt as to British sovereignty over the British Indian Ocean Territory and their consequent right to extend the application of the [said] Convention and Protocol to it. Accordingly, the Government of the United Kingdom do not accept or regard as having any legal effect the declarations made by the Government of the Republic of Mauritius."