evidence: Yesterday, Reuters published an interesting report on the recent months-long standoff between Indonesia and China over an oil rig planted in a maritime region claimed by both countries. According to the report, which cited four sources familiar with the matter, China told the Indonesian government to stop drilling for oil and natural gas near Indonesia’s Natuna islands on the grounds that the region was "Chinese territory." [...] China and Indonesia have a recent history of friction around the Natunas, where Indonesia’s 200-nautical-mile Exclusive Economic Zone, a concept set out in the 1982 United Nations Convention on the Law of the Sea (UNCLOS), overlaps with the southernmost reaches of China’s expansive "nine-dash line" maritime claim. The past five years have seen frequent incursions of Chinese fishing and maritime militia vessels into Indonesia’s EEZ. In response to the Chinese incursions, the Indonesian government has bolstered its military presence on Natuna Besar, the largest island in the area, and held military exercises in the surrounding waters. It has also beefed up armed maritime force, known as Bakamla, in order to deter foreign fishing vessels from entering its EEZ.