In a regular press conference, the Vietnamese Foreign Ministry’s Spokeswoman Le Thi Thu Hang said that the operation of the Chinese ships within the territorial waters of Sinh Ton Dong island in the Truong Sa archipelago has violated Vietnam’s sovereignty and the 1982 UN Convention on the Law of the Sea (UNCLOS)’s regulations on the operation of foreign vessels in the territorial waters of coastal nations, run counter to the spirit and content of the Declaration on the Conduct of Parties in the East Sea (DOC), and complicated the situation which is unfavorable for the process of negotiations between ASEAN and China on a Code of Conduct of Parties in the East Sea (COC).
The Philippine Department of Foreign Affairs said in a diplomatic protest that the swarming and threatening presence of the Chinese ships creates an atmosphere of instability and shows that China is ignoring its commitments to promoting peace and stability in the region.
At a reception for Indonesian Foreign Minister Retno Marsudi and Defence Minister Prabowo Subianto on March 30, Japanese Prime Minister Yoshihide Suga voiced his concern over China’s activities in the waters, including the enforcement of its Coast Guard Law which allows patrol ships to use weapons. Both sides spoke highly of the importance of maintaining free and open navigation based on international law.
Meanwhile, Japanese Ambassador to the Philippines Koshikawa Kazuhiko tweeted that the South China Sea (called the East Sea in Vietnam) issues are directly related to peace and stability and a concern for all parties.
“Japan strongly opposes any action that heightens tensions. We support the enforcement of the Rule of Law in the sea and work with the international community to protect the free, open, and peaceful seas,” he stressed on his Twitter account.
Australian Ambassador to the Philippines Steven Robinson tweeted that “Australia supports an Indo-Pacific region which is secure open and inclusive. The South China Sea – a crucial international waterway – is governed by international rules and norms, particularly UNCLOS. We remain concerned about destabilizing actions that could provoke escalation”.
Responding to China’s statement that the vessels operating around the Sinh Ton island cluster are fishing ships and they were just taking shelter from rough seas, Jay Batongbacal, Director of the University of the Philippines’s Institute for Maritime Affairs and Law of the Sea, said that a reconnaissance flight by the Philippine Air Force showed that around 200 vessels have been there for weeks.
“Satellite photos also show that the decks of these vessels are very, very clean. It's as if they're brand new,” he said, adding that “One big worry, of course, is that they might be preparing to occupy the reef in order to construct another artificial island”.
Gregory B. Poling, who is Director of the Asia Maritime Transparency Initiative at the Center for Strategic and International Studies, said that China’s acts are “suspicious” as the boats, tied up “with military precision” beside each other, “are not fishing,” they're parked.
Collin Koh, a Research Fellow at the S. Rajaratnam School of International Studies under Singapore’s Nanyang Technological University, stated that China’s activities are escalating tensions in the East Sea.
It can be said that China’s recent activities in the East Sea have continued challenging international law and violating the sovereignty and sovereign rights of other countries.
In 2016, the Permanent Court of Arbitration (PCA) in The Hague issued a ruling rejecting all China’s illegal sovereignty claims in the East Sea.
Source: VNA