MANILA - The Philippines, Malaysia, Vietnam and Indonesia are seen staying the course despite the United States' "full-throated" backing of an international ruling dismissing China's claims to nearly all of the South China Sea.

"The great powers, as they escalate their rivalry, will woo us into their side. But we will advance our own national interest," President Rodrigo Duterte's spokesman, Mr Harry Roque told reporters on Tuesday (July 14).

He said while the Philippines stands by the 2016 ruling against China, "this is not the sum total of our relations".

"We will just have to agree to disagree. We will proceed with our bilateral relations (with China)," he said.

He said the Philippines does not want to rock the boat and would rather seek an end to disputes with China through venues like Asean and mechanisms like a "code of conduct" on resolving maritime rows.

The Philippines is contesting China's claims over waters it considers part of its exclusive economic zone.

China's vast claims also overlap those of Vietnam, Malaysia, Brunei and Taiwan.

Foreign Secretary Teodoro Locsin on Tuesday held a video call with Chinese Foreign Minister Wang Yi.

Mr Wang noted that with the joint efforts of China and Asean countries, the situation in the South China Sea has generally remained stable.
But, he said, the US "out of its own geopolitical needs, worries only if the South China Sea is not chaotic".

Malaysia is also unlikely to "become very gung-ho and push forward and confront China", Universiti Malaya's Institute of China Studies director Ngeow Chow-Bing told The Straits Times.

"The US statement is a formal expression of what Washington has already been practising for years," he said.

Hanoi-based analyst Ha Hoang Hop said Vietnam also does not expect the US' pivot to make any difference on the ground.

"China has exercised strong control in the South China Sea... The US will continue to exercise limited Fonops (freedom of navigation operations) and possibly take other actions. Even though the risk of military conflict is higher, I expect China and the US to hedge these risks," he said.

"The worst will happen if one excessively follows the path of 'might makes right'," he added.

Indonesia, which is not a claimant state but has clashed with China over fishing rights around the northern islands of Natuna, said its position remains "firm and consistent".

"Any country's support for Indonesia's rights concerning Natuna's waters is normal, as our position is based on Unclos (UN Convention on the Law of the Seas)," said Dr Teuku Faizasyah, spokesman for Indonesia's Foreign Affairs Ministry.

Unclos delineates exclusive economic zones that countries may claim, based on land features.

Dr Beginda Pakpahan, a political and economic analyst on global affairs at University of Indonesia, said it would be more prudent for the US and China to "refrain from taking actions that could escalate tensions" in the region.

The two superpowers should just allow territorial disputes to be resolved through existing mechanisms like Unclos, he said.

The Trump administration has escalated its response against China by rejecting nearly all of Beijing's claims in the South China Sea.

US Secretary of State Mike Pompeo said on Monday the US would treat Beijing's pursuit of resources in the dispute-rife South China Sea as illegal, ramping up pressure on another front.

Mr Pompeo explicitly sided with South-east Asian nations, after years of the US saying that it took no position on the merits of disputes between China and each of its South-east Asian neighbours.

In line with the 2016 ruling, Mr Pompeo said Mischief Reef and Second Thomas Shoal both "fall fully under the Philippines' sovereign rights and jurisdiction".

The Philippines brought the case against China in The Hague in 2013, arguing that Beijing's so-called nine-dash line that marks its claims to nearly all of the South China Sea runs counter to Unclos.

The tribunal in The Hague sided with the Philippines in 2016, and dismissed China's claims.

But China refused to recognise that ruling, and instead transformed reefs, shoals and atolls it occupied in the South China Sea into island fortresses.

Mr Pompeo is now offering a "full-throated endorsement of the tribunal's ruling", Mr M. Taylor Fravel, a political scientist at the Massachusetts Institute of Technology, told The New York Times.

The US now rejects Beijing's claims in the waters surrounding Vanguard Bank off Vietnam, Lucania Shoals off Malaysia, waters considered in Brunei's exclusive economic zone and Natuna Besar off Indonesia.

"Any (Chinese) action to harass other states' fishing or hydrocarbon development in these waters - or to carry out such activities unilaterally - is unlawful," Mr Pompeo said.

But some analysts say Washington's latest involvement in the South China Sea may just be short-term bluster and not a permanent policy goal.

"I think it's good this happened, but it's a one-off. For it to really have an impact, we'll have to see what happens down the road," said Mr Murray Hiebert, head of research at BowerGroupAsia, on Tuesday.

He was speaking at a video conference organised by think-tank Stratbase in Manila.

"A lot of what was said was unprecedented and stronger than what was said before," said Mr Hiebert.

But he added that China was likely to see American pronouncements as coming from a "weakened Trump administration, struggling and looking for foreign enemies to attack".

"One problem with the current (Trump) administration is they make a very strong statement and then disappear for months at a time," he said.