evidence: There are fewer than 100,000 people on Natuna, most of them fisherman and farmers. [...] "Natuna is the furthermost island in Indonesia, and it's on our border in the South China Sea," said Bambang Hendratno, a senior military official in Natuna. [...] "Natuna Island is located up north in the South China Sea and the potential conflict zone where China's nine-dash line and Indonesia's exclusive economic zone off the coast of Natuna overlap," Iis Gindarsah, a defence researcher at the Centre of Strategic Studies in Jakarta tells me.