China’s Expanding Presence in the South China Sea

On October 31, 2022, a significant shift occurred in the South China Sea. Chinese Coast Guard ship 5205, a prominent vessel in Beijing’s fleet, left the southern port of Sanya. It embarked on a patrol near the contested northern Spratly Islands. Five months later, the ship altered course, moving close to areas occupied by Vietnam. Attention peaked when the Philippines accused China of firing a military-grade laser at a resupply vessel near Second Thomas Shoal. By 2025’s end, CCG 5205 had navigated within 10 nautical miles of nearly 30 features claimed by Malaysia, the Philippines, Taiwan, and Vietnam. This ship represents China’s Coast Guard’s expanded operations and maritime militia fleet, intensifying its territorial claims.

Vietnam’s Strategic Countermeasures

Vietnam is actively responding to China’s assertive moves by fortifying outposts and enhancing regional coordination. A Bloomberg analysis revealed 100 Chinese vessels, including 45 affiliated with state-backed entities, passing within 10 nautical miles of Vietnamese-controlled features over the past year. This number nearly doubled compared to the previous year. Chinese patrols are concentrated around Sand Cay, now a fortified garrison, and Namyit Island and Petley Reef, which received upgrades.

Tensions Mount in the Spratly Islands

The Spratly Islands, home to heightened confrontations, are witnessing Vietnam’s efforts to mirror Chinese expansion. President To Lam seeks to balance ties between superpowers amidst regional and global conflicts. The strategic corridor carries about $4 trillion in trade annually, increasing stakes. Lam is expected to outline Vietnam’s position at the Shangri-La Dialogue in Singapore.

Vietnam’s Enhanced Military Coordination

The South China Sea’s tensions reveal limits in cooperation between China and Vietnam. Hanoi strives to deny Beijing’s dominance over global trade routes. Cooperation among Southeast Asian countries is strengthening, with Vietnam leading in defense measures. The Philippines and Vietnam are improving coordination, conducting joint exercises, and establishing direct communication channels.

Regional Challenges and Collaboration

Vietnam’s focus on strategic autonomy has led to increased defense ties with the US and other regional allies. Hanoi’s “bamboo diplomacy” involves diversifying security partnerships, acquiring US-made patrol vessels, and upgrading diplomatic ties with the US to rival China’s influence. Despite increasing pressure, China seeks to maintain historical bonds with Vietnam.

Historical Context and Current Developments

Vietnam and China have faced disputes over South China Sea territories, notably during the 2014 standoff over a Chinese oil rig. Vietnam’s land reclamation efforts, started in 2021, have reshaped the strategic landscape, reclaiming 2,771 acres across occupied features.

Growing Tensions and Economic Impact

The South China Sea disputes are affecting local fishermen who face increased harassment from Chinese vessels. Vietnamese authorities are promoting group operations for safety, providing limited fuel subsidies, and encouraging reporting of confrontations. Fishing communities, such as those in Quang Ngai, experience fraught journeys between territorial waters, directing growing concerns over escalation.