evidence: The Natuna islanders’ fishing grounds fall within Indonesia’s 200-nautical-mile exclusive economic zone (EEZ) — but also overlaps China’s nine-dash line claiming most of the South China Sea. [...] Besides defence installations, the islands are being developed for fisheries, oil and gas and tourism, said Natuna’s regent, Wan Siswandi. In 2018, the islands were added to the list of Indonesia’s national geoparks, which are protected landscapes of geological significance. "Natuna was already known internationally. But we don’t want people to know Natuna as an area of defence," he said.