Beijing will not take a "single step back" in the contested South China Sea, state-run media said Friday, despite reports of US naval patrols close to its artificial islands ahead of a tribunal ruling on the dispute.

China asserts sovereignty over almost all of the strategically vital waters in the face of rival claims from its Southeast Asian neighbours, and has rapidly turned reefs into artificial islands capable of hosting military planes.

It is currently holding a week of military drills around the Paracel Islands in the northern part of the sea, during which other ships have been prohibited from entering the waters.

The Virginia-based Navy Times reported this week that three US destroyers -- the Spruance, Stethem and Momsen -- have been patrolling near the Chinese-claimed Scarborough Shoal and Spratly Islands further south.

The aircraft carrier USS Ronald Reagan and supporting vessels are also in the South China Sea, the US Navy has said.

The Navy Times cited experts describing the deployments as "a message of resolve to the Chinese and US allies in the region" and "a deliberate show of force" ahead of an international tribunal ruling.

The Permanent Court of Arbitration (PCA) in The Hague is set to release its final decision Tuesday on the case, which was brought by the Philippines challenging China's position.

In an editorial Friday the Global Times newspaper, which is close to the ruling Communist Party and often takes a nationalistic tone, said: "If the US and the Philippines act on impulse and carry out flagrant provocation, China will not take a single step back."

It could turn Scarborough Shoal -- an islet it wrested from Philippine control in 2012 -- "into a military outpost", it said, and "tow away or sink" an old landing craft Manila grounded on the Chinese-claimed Second Thomas Shoal in the Spratlys to "resolve the standoff once and for all".

It blamed Vietnam and the Philippines for provoking tensions by carrying out reclamation work in the area earlier.

- Willing to share -

But also Friday, Philippines Foreign Secretary Perfecto Yasay said his country was willing to share natural resources with Beijing in the contested areas even if it wins the legal challenge next week.

Yasay said President Rodrigo Duterte's administration hoped to quickly begin direct talks with China following Tuesday's verdict, with the negotiations to cover jointly exploiting natural gas reserves and fishing grounds within the Philippines' exclusive economic zone.

Beijing cites a vaguely defined "nine-dash line" on Chinese maps dating back to the 1940s as the source of its territorial claims, but Manila contests that the line has no basis under international law, and that Beijing has no historic right to the area.

Manila lodged the PCA suit against Beijing in early 2013, saying that after 17 years of negotiations it had exhausted all political and diplomatic avenues to settle the dispute.

Beijing has boycotted the proceedings, saying the court has no jurisdiction over the issue.

At a regular press briefing Friday, foreign ministry spokesman Hong Lei said the arbitration went against the UN Convention on the Law of the Sea (UNCLOS) and was thus "a violation of international rule of order under the cloak of championing it".

Attempts to pressure China into accepting its outcome were "delusional" and "futile", he added.

His comments echoed a China Daily editorial Friday, which called the court case a "farce" and the tribunal's forthcoming ruling "illegal, null and void from the outset".

The ruling was likely to result in "increasing threats" to China, which "has to be prepared for all eventualities", it said, adding: "This is not being alarmist, it is being realistic."

US urges respect for South China Sea ruling
Washington (AFP) July 7, 2016 - The United States on Thursday urged respect for a decision on territorial disputes in the South China Sea set to be handed down by an international arbitration court next week.

The Permanent Court of Arbitration in the Dutch city of The Hague is set to make its final decision on Tuesday in the case between the Philippines and China.

"We urge both parties to comply with the ruling and urge all claimants to avoid provocative actions or statements," Abraham Denmark, the senior Pentagon official responsible for East Asia, told a congressional hearing about the decision, already rejected in advance by Beijing.

China claims almost the entire sea -- strategically important for world maritime trade -- where the Philippines, Vietnam, Malaysia, Brunei and Taiwan also have claims.

Although Washington is not directly part of the territorial disputes, it has urged they be resolved through diplomacy, not Chinese force.

Beijing has artificially enlarged islets and reefs to build runways, ports and other installations to legitimize its claims.

The United States has meanwhile boosted its military presence in the region, addressing neighboring countries' concerns about China's actions. Washington has also strengthened its defense alliances with the Philippines, Vietnam and other countries.

The aircraft carrier USS Ronald Reagan is currently patrolling the sea.

"We will provide critical support for diplomacy by providing a credible deterrent against the use of force," Denmark said.

Chinese media on Tuesday said Beijing is ready for a "military confrontation" with the United States in the region.

The new Philippine president, Rodrigo Duterte, earlier this week proposed dialogue with China following the court's decision next week, offering discussions about issues such as setting up joint ventures for sharing resources in the disputed waterway.