Some nations have renamed parts of the South China Sea to strengthen their claims over the disputed waterway. But how much effect do such changes have on territorial disagreements? Indonesia is the latest country to take such action. Officials there recently released a new map showing the renamed North Natuna Sea. The sea, northwest of Borneo island, includes an internationally recognized economic zone belonging to Indonesia. China claims territory that overlaps part of Indonesia’s economic zone. Last month, Indonesian President Joko “Jokowi” Widodo visited the disputed sea area. His visit came a week after an Indonesian navy ship fired warning shots at Chinese fishing boats in the area.