evidence: China and Indonesia seem to be at it again in the Natuna waters. In late December, dozens of Chinese boats were fishing across at least 30 different location within Indonesia’s exclusive economic zone (EEZ) accompanied by several coast guard vessels. Indonesia summoned the Chinese ambassador to Jakarta and issued a strong diplomatic protest. [...] Analysts like to note that Indonesia and China have a dispute around the Natuna EEZ. But a dispute implies both sides equally have some rights under the law to begin with. The problem is that Indonesia’s rights are recognized by international law, particularly the 1982 United Nations Convention on the Law of the Sea (UNCLOS), and China’s are not. [...] China’s claim over the fishery resources within the Natuna EEZ is not backed by UNCLOS. A 2016 ruling by the International Tribunal on the Law of the Sea (through the Permanent Court of Arbitration) further declared China’s nine-dash line claim over the whole of the South China Sea to be illegal. So, if there is a dispute — i.e. genuine EEZ overlap — between Indonesia and China, where exactly are the coordinates for China’s claim and their international legal basis?