The Philippines on Wednesday "strongly objected" to China's announcement that it would intensify its supervision and control over the contested islands and waters in the West Philippine Sea. In a text message, Foreign Affairs Department spokesman Raul Hernandez said that such activities are "contrary to China's obligation" under the international law, as defined by the provisions in the United Nation Convention on the law of the Sea or Unclos. The Philippines and China were signatories to the Uncos, which defined ownership of coastal waters, exclusive economic zones and continental sj=helves of each country.

Fabunan, S. S. D. (2013, February 28). DFA reacts strongly vs china sea patrol. Manila Standard, pp. A1, A2.