Trump Deploys US Navy Near Scarborough Shoal

Waters west of the Philippines are a major focus for global maritime observation due to rising tensions. President Donald Trump continues to maintain a strong US naval presence in the Indo-Pacific, signaling ongoing strategic interest in the region. Scarborough Shoal, known as Bajo de Masinloc in the Philippines and Huangyan Dao in China, is the core of this dispute, with military and surveillance activity having increased significantly in the region.

Joint maritime activities involving the United States, Japan, and the Philippines occurred from July 21st to July 25th, 2026, west of Zambales. The US participation included the USS George Washington carrier strike group and the USS Santa Barbara, while Japan contributed the JS Yudachi, and the Philippines contributed the BRP Antonio Luna. Rear Admiral Roy Vincent Trinidad emphasized the significant scale and capability of the US carrier strike group.

Scarborough Shoal lies approximately 120 nautical miles west of Luzon, a strategically important location. China gained effective control of the shoal after a 2012 standoff with the Philippines, marking a significant shift in regional control. The 2016 arbitration ruling rejected China's sweeping historic rights claims over the South China Sea, although it did not assign ownership of the shoal itself, noting its traditional use by multiple nations.

On July 24th, the Philippine Coast Guard reported the use of water cannons by China against its vessels in the disputed waters. A Chinese vessel allegedly came within 7 meters of a Philippine ship, creating a dangerous collision risk. China, in response, claims its forces were taking 'control measures' against vessels entering what it considers its sovereign waters, leading to a direct condemnation from Rear Admiral Jay Tarriela regarding the unprofessional actions of the China Coast Guard.

The US maintains no position on individual sovereignty claims over specific features in the South China Sea. However, the US confirms that its Mutual Defense Treaty with the Philippines applies to armed attacks on Philippine forces, public vessels, or aircraft, including those of its Coast Guard, anywhere in the South China Sea. Secretary of State Marco Rubio reaffirmed these obligations during July meetings in Manila, reiterating America's commitment to its treaty responsibilities.

A follow-up maritime activity occurred from August 19 to August 25, demonstrating sustained international cooperation. This operation involved the United States, the Philippines, and Australia within the Philippine Exclusive Economic Zone. The US deployed the USS Santa Barbara and a P-8A Poseidon surveillance aircraft, while Australia contributed the HMAS Supply and additional air assets, reinforcing a multinational presence in the region.

Multinational exercises practiced maritime surveillance and anti-submarine operations, indicating a comprehensive approach to regional security. Washington is moving away from sole reliance on occasional aircraft carrier visits, opting instead for sustained engagement through regular joint maneuvers. Pentagon official Elbridge Colby emphasized that this shift confirms the US is definitely not disengaging from Asia, but rather evolving its strategic presence.

The USS Abraham Lincoln completed an unusually long Middle East deployment, highlighting the demanding nature of global naval operations. Acting Secretary of the Navy James Tal confirmed that this extension was mission-critical, meaning it was necessitated by operational requirements in the region. The carrier entered the Philippine Sea on September 15th while heading to San Diego, marking its transit through the Indo-Pacific after its extended deployment.

Claims regarding a Trump-ordered deployment of the USS Abraham Lincoln specifically to Scarborough Shoal are unsupported by publicly available records. The carrier's operations remained within routine 7th Fleet activities, part of its standard transit and operational schedule. The USS George Washington remains the only carrier with confirmed recent proximity to Bajo de Masinloc, engaging in exercises closer to the disputed area.

A Chinese research vessel, the Haiyang Dizhi Shihao, spent nearly a month in the area, raising concerns about its activities. While the vessel possessed seabed drilling capabilities, no confirmed evidence of such operations was found, according to Rear Admiral Roy Vincent Trinidad. In mid-September, monitoring revealed 48 Chinese vessels across four West Philippine Sea locations, indicating a significant and sustained presence. This fleet included vessels from the China Coast Guard, maritime militia, and commercial fishing boats, which often operate in a gray zone, asserting China's claims without direct military confrontation.

Southern Theater Command exercises now include combat aircraft and warships, demonstrating an increased military capability and readiness. Manila argues these activities impede the movement of local fishermen, directly affecting their livelihoods and traditional fishing grounds. In response, the Philippines is deepening maritime ties with partners like Japan, Australia, and Canada to bolster its defense capabilities and counter China's assertiveness.

remains open to joint oil and gas exploration with China, signaling a desire to balance economic cooperation with ongoing disputes. Economic ties persist despite continuous friction over fishing rights and maritime claims, illustrating the complexity of the Philippines' foreign policy. However, this balancing act is becoming harder to maintain due to frequent sea collisions and escalating tensions, which challenge the viability of cooperative ventures.

A significant maritime incident occurred on September 18th, when China Coast Guard vessel 21585 collided with the Philippine fisheries vessel BRP Datu Mat Salamat. The collision took place approximately 54 nautical miles off Palawan, an area within the Philippines' exclusive economic zone. At the time of the incident, the Philippine vessel was engaged in providing fuel assistance to local fishermen, underscoring the impact of these confrontations on civilian activities.

Philippine vessels frequently suffer structural damage from Chinese maneuvers, which include the use of water cannons and dangerous close-quarter approaches. China consistently denies fault, instead blaming Philippine vessels for ignoring warnings and initiating collisions. This cycle of incidents and blame has prompted the US, Canada, and the EU to express collective concern, highlighting the international community's apprehension regarding the increasing risks in the South China Sea.

For the Trump administration, maintaining naval forces in and around the Philippines serves several purposes simultaneously. These deployments reassure Manila of the US commitment in the Indo-Pacific region and facilitate joint training with Philippine and allied forces, enhancing interoperability. Furthermore, they reinforce freedom of navigation and overflight, upholding international law, and prove US capability to project power globally despite other commitments.

Beijing has repeatedly criticized US military activity in the South China Sea, arguing that outside powers contribute to instability by increasing military deployments close to China. China maintains its operations are within its sovereign territory, asserting its historical claims over the disputed waters. This stance leads China to reject the maritime interpretations held by Washington and Manila, viewing them as attempts to undermine its sovereignty and regional influence.

The USS George Washington carrier strike group's participation near the area demonstrated Washington's capability to place major naval power close to one of the most sensitive points in the Philippines-China maritime dispute. Alongside the carrier, the USS Santa Barbara and surveillance aircraft maintain a persistent presence, conducting regular patrols and observation missions. The recent arrival of the USS Abraham Lincoln underscores the continued robust US presence and capabilities across the Western Pacific, reinforcing deterrence and stability efforts.

President Trump therefore faces the same strategic challenge that has confronted previous US administrations, but under increasingly tense conditions. Washington aims to demonstrate that its alliance with Manila remains credible without turning every maritime encounter into a direct confrontation. Simultaneously, President Marcos seeks to protect maritime claims and the livelihoods of Filipino fishermen while avoiding full-scale escalation. President Xi Jinping treats the area as a core sovereignty issue, signaling China's unwavering commitment to its territorial claims, which creates a complex and volatile geopolitical landscape.