Nine-Dash Line Explained with Map

Origins of the Nine-Dash Line00:00:00

The nine-dash line is a controversial demarcation used by China to claim vast swathes of the South China Sea, often overlapping with the exclusive economic zones of other nations like the Philippines. Originally an eleven-dash line created in 1947, it was later reduced to nine dashes by Mao Zedong.

Historical Context and Expansion00:03:00

Following Japan's defeat in World War II, China exploited the power vacuum to claim various archipelagos like the Spratlys and Paracels. This expansion was based on geopolitical opportunism rather than clear historical sovereignty, allowing China to unilaterally define its maritime borders.

Evolution into the Ten-Dash Line00:05:50

In 2023, China published a new standard map adding a tenth dash near Taiwan. This continuous adjustment demonstrates China's strategy of using arbitrary cartographic changes to enforce territorial ambitions, which further complicates diplomatic relations with neighbors like India and Taiwan.

Legal Standing and UNCLOS00:07:05

The United Nations Convention on the Law of the Sea (UNCLOS) provides guidelines for maritime jurisdiction, but China's claims disregard these international standards. A 2016 arbitral tribunal ruled that China's historic rights claims have no lawful effect, yet the lack of enforcement power makes this a persistent and unresolved issue.