hmg would like to establish a "marine park" or "reserve" providing comprehensive environmental protection to the reefs and waters of the british indian ocean territory (biot), a senior foreign and commonwealth office (fco) official informed polcouns on 12 may. the official insisted that the establishment of a marine park – the world's largest – would in no way impinge on usg use of the biot, including diego garcia, for military purposes. he agreed that the uk and u.s. should carefully negotiate the details of the marine reserve to assure that u.s. interests were safeguarded and the strategic value of biot was upheld. he said that the biot’s former inhabitants would find it difficult, if not impossible, to pursue their claim for resettlement on the islands if the entire chagos archipelago were a marine reserve.