Controversial ’10-Dash Line’ Map: Philippines, Taiwan, And Malaysia Reject China’s Claims

Recent developments regarding a Chinese map asserting claims over the South China Sea have reignited tensions in the region, prompting responses from multiple countries with stakes in this strategically vital waterway. The controversy revolves around China’s publication of a new map, often referred to as the ’10-dash line,’ which extends its territorial claims far beyond its recognized Exclusive Economic Zone (EEZ) and has raised concerns about China’s commitment to international law and diplomacy.

The South China Sea has long been a subject of dispute, with China, Taiwan, Vietnam, the Philippines, Malaysia, and Brunei all asserting territorial claims over various parts of the region. The South China Sea is a crucial waterway for global trade, with more than $3 trillion in trade passing through its waters annually. The United States has also played a role in the dispute, advocating for freedom of navigation in the area and supporting its regional allies.

China’s recent map, which expands upon its previous ‘nine-dash line’ claim, has been met with strong opposition from neighboring countries. Malaysia, for instance, has firmly rejected China’s claims, stating that it does not recognize China’s sovereignty over the South China Sea as outlined in the 2023 edition of China’s standard map. Malaysia’s foreign ministry emphasized the complexity and sensitivity of the South China Sea issue, advocating for peaceful resolution through dialogue and adherence to international law, particularly the United Nations Convention on the Law of the Sea (UNCLOS).

The Philippines, too, has rejected China’s claims as presented in the new map. The Philippine Department of Foreign Affairs argued that these claims have no basis under international law, specifically citing UNCLOS as a guiding framework for resolving maritime disputes. It is worth noting that in 2016, an international court ruled against China’s ‘nine-dash line,’ stating that it lacked legal grounds.

The map also has implications for India, as it extends China’s claims into the waters around the Indian states of Arunachal Pradesh and the Aksai Chin plateau. India, which already has ongoing territorial disputes with China in the Ladakh region, has rejected these additional claims, emphasizing that they have no legal basis and only complicate boundary resolution.

China’s publication of this map has generated diplomatic tensions and prompted responses from the United States. The U.S. State Department has rejected what it views as unlawful maritime claims reflected on the map and called on China to align its maritime claims in the South China Sea and elsewhere with international law, specifically UNCLOS. The Pentagon, too, has criticized China’s actions as obfuscation of international sovereignty and expressed the importance of working with regional allies to maintain the international rules-based order.

The timing of this dispute is noteworthy, as it coincides with major international events, including the G20 summit in India. China’s decision to release the map just before these meetings has fueled speculation about its diplomatic intentions. While China has expressed support for the Code of Conduct on the South China Sea and regional peace, the map suggests a different stance—one that prioritizes its territorial claims over diplomatic consensus.

The South China Sea issue has become a point of contention in the wider context of U.S.-China relations. The United States views China’s actions as a threat to regional security and stability, and China’s unilateral publication of this map has provided further ammunition for Washington to reinforce this perception. Recent security agreements between the United States, Japan, and South Korea signal a growing effort to contain China’s regional influence.

As tensions mount, incidents in the South China Sea have become more frequent. Confrontations between Chinese vessels and those of neighboring countries, including the Philippines, have escalated. The U.S. has reaffirmed its commitment to its treaty allies in the region, stating that it will defend them if they come under armed attack, including in the South China Sea.


In conclusion, the publication of China’s ’10-dash line’ map has reignited tensions in the South China Sea and raised questions about China’s adherence to international law and diplomacy. The dispute has implications for regional stability and broader U.S.-China relations, as the United States and its allies respond to China’s assertiveness in the region. As diplomatic efforts continue, the South China Sea remains a complex and sensitive issue with significant geopolitical ramifications.

M. Shanawar Khan