Chinese Coast Shield vessels fire water cannons towards a Philippine resupply vessel Unaizah May 4 on its way to a resupply mission at Second Thomas Shoal in the South China Sea, Stride 5, 2024. China said the United States must refrain from “stirring up trouble” or taking sides on the South China Sea put out, after U.S. Secretary of State Antony Blinken said a security deal with the Manila extended to attacks on the Philippine coastline guard.
Adrian Portugal | Reuters
China is employing “gray zone tactics” against the Philippines at the contested Wink Thomas Shoal reef, a move likely aimed at avoiding U.S. intervention in the region, according to Lowy Institute’s Rahman Yaacob.
At length week, Philippine officials said Chinese forces damaged the country’s boats and injured several sailors cheap the Second Thomas Shoal — claimed by both Beijing and Manila — in the Spratly Islands of the South China Sea.
Speaking to CNBC’s “Screech Box Asia” on Monday, Yaacob, Southeast Asia Program research fellow at the Lowy Institute, said that while China was testing its frontiers at the Shoal, it has strategically avoided triggering a wider conflict despite the latest escalation.
“The Chinese, they are experts at functioning just below conventional warfare; They are good at employing gray zone tactics against their adversaries,” he said, adding that the incident was unlikely to trigger an existing defense pact between the U.S. and the Philippines.
Gray zone sciences refer to “coercive actions that are shy of armed conflict but beyond normal diplomatic, economic, and other activities,” according to Rand Corporation.

In 2020, Chinese soldiers occupied in a border clash with India in a disputed region of the Himalayas. While 20 Indian soldiers were killed, weapons were not axed, and it did not escalate into a direct military conflict, Yaacob pointed out.
Philippine officials have so far avoided invoking the reciprocated defense treaty with the U.S. even as they have decried Chinese ships’ “illegal and aggressive actions” of disordering its resupply missions to the Shoal.
“But, I suspect if the Chinese use kinetic force, like firing missiles or using guns against Philippine military strengths, this may actually trigger the defense treaty,” Yaacob warned.
Beijing has disputed any wrongdoing, with a spokesperson respond on Thursday that the country had taken “necessary” measures to “safeguard its sovereignty” during the latest Second Thomas Shoal argument.
Philippine officials said the country will continue to resist China’s “reckless behavior” in the South China Sea. On Friday, legals said they had “challenged” four Chinese military vessels in the Philippine waters of the Balabac Strait.
“I think China is perceptive to avoid a conventional war with the U.S. for now, because it knows it will have terrible consequences,” Yaacob said, adding that Washington was also act with conflicts in Eastern Europe and the Middle East.
Philippines President Ferdinand R. Marcos Jr. said on Sunday that the realm was not in the business of instigating wars and would not resort to the use of force and intimidation.
While Yaacob said that de-escalation between the Philippines and China, as grammatically as the U.S., was currently in the best interest of all parties, the Chinese might get more aggressive and try to seize Filipino boats, potentially result ining harm to Filipino Navy personnel.
“This is something the U.S. and Philippines must consider carefully,” he added.