Philippines pursues joint South China Sea patrols with US, Australia amid Chinese tensions

Manila is moving toward joint maritime patrols with the United States and Australia in the South China Sea, a shift driven by escalating confrontations with Chinese forces in waters both nations depend on for security and trade. The acceleration came after a February 6 incident off Second Thomas Shoal, where a Chinese coast guard vessel aimed a military-grade laser at a Philippine patrol boat, temporarily blinding crew members. The attack prompted President Ferdinand Marcos Jr. to summon China's ambassador and file a formal diplomatic protest—a rare show of public anger that signaled how far tensions have risen in the disputed waterway.

U.S. Defense Secretary Lloyd Austin called his Philippine counterpart, Carlito Galvez Jr., on Wednesday to reaffirm American commitment to the alliance and discuss deepening operational cooperation. During Austin's visit to Manila earlier in the month, the two nations had already agreed to resume combined maritime activities in the South China Sea. The conversation reflected a broader U.S. strategy to strengthen military partnerships across the Indo-Pacific as a counterweight to Chinese power, particularly in any potential future crisis over Taiwan. Austin also announced that the Philippines had approved an expanded American military footprint, allowing rotating U.S. forces to station themselves at four additional Philippine military bases beyond the five already in use.

Australia is now pursuing a parallel track. Defense Minister Richard Marles met with Galvez on Wednesday and said the two countries were exploring the possibility of joint patrols in the contested waters. Marles framed the proposal in terms of upholding international law and the 1982 U.N. Convention on the Law of the Sea—a framework China has largely rejected. Australia has substantial economic interests at stake; much of its trade passes through the South China Sea. Galvez noted that Australian and Philippine forces had conducted joint patrols in the past to counter terrorist threats in the southern Philippines, and suggested they could do so again in the broader maritime domain. Australia is one of only two countries with which the Philippines has struck a defense agreement allowing joint combat exercises; the Philippine Constitution bars the permanent stationing of foreign troops on its soil.

China views these moves as interference in what it considers a regional matter and has warned the United States repeatedly not to meddle. Chinese forces have protested U.S. Navy operations and fighter jet flights in the area, though Washington maintains it is simply exercising rights guaranteed under international law to navigate international waters. The laser incident was one of several aggressive encounters between Chinese and Philippine vessels in recent years, part of a pattern of coercion that has prompted Manila to seek closer security ties with Washington and Canberra.

Simultaneously, China is pursuing a different diplomatic strategy. Chinese Foreign Minister Qin Gang said Wednesday in Jakarta that China would work with the Association of Southeast Asian Nations to accelerate negotiations on a proposed code of conduct for the South China Sea—essentially a nonaggression pact designed to prevent armed clashes. The talks between China and the ten-nation ASEAN bloc, four of whose members have territorial disputes with Beijing, have dragged on for years, stalled by disagreements over which areas should be covered and whether the agreement should be legally binding. China and ASEAN have committed to speeding up negotiations this year, but the fundamental gaps remain unresolved. The competing diplomatic tracks—one driven by military alliance-building, the other by negotiated restraint—reflect the region's deep uncertainty about how to manage Chinese power without triggering confrontation.