China Deploys Over 100 Naval and Coast Guard Vessels in East Asia

On December 5, 2025, China has significantly escalated its military presence in East Asian waters by deploying over 100 naval and coast guard vessels, marking the largest maritime show of force to date. This information comes from four sources and intelligence reports reviewed by Reuters.

Key Details

According to Tsai Ming-yen, the director-general of Taiwan"s National Security Bureau, this deployment coincides with what is typically the most active season for Chinese military drills. These drills are part of China"s broader strategy to assert its dominance in the region.

In addition to the naval vessels, Chinese warplanes have also been involved in the exercises. Reports indicate that some of these vessels have conducted mock attacks on foreign ships, simulating potential conflict scenarios. Furthermore, the exercises have included access-denial operations, which are designed to prevent outside forces from providing reinforcements in the event of a military conflict.

While the scale of this deployment is unprecedented, two additional sources have stated that countries in the region are closely monitoring the situation. However, they have assessed that the current deployment does not pose significant risks at this time.

This recent activity follows China"s last named military exercise around Taiwan, which occurred in April 2025 and was referred to as "Strait Thunder-2025." Notably, China did not formally acknowledge the military drills that took place during a mass naval activity in December 2024.

Background

The deployment of naval and coast guard vessels is part of China"s ongoing efforts to assert its territorial claims in the East China Sea and the Taiwan Strait, areas that have been contentious due to overlapping claims from neighboring countries, including Taiwan. The increased military activity is viewed as a demonstration of China"s growing naval capabilities and its willingness to project power in the region.

In recent years, tensions have escalated in East Asia, particularly concerning Taiwan, which China considers a breakaway province. The international community, particularly the United States and its allies, has been vigilant about China"s military maneuvers, often responding with their own military exercises in the region to deter potential aggression.

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What"s Next

As the situation develops, it remains to be seen how neighboring countries will respond to China"s show of force. The ongoing military drills and naval deployments could lead to increased tensions in the region, prompting further military readiness from countries like the United States, Japan, and South Korea. Analysts will be watching closely for any changes in China"s military posture and the implications for regional security.

For further context on international military developments, see our related coverage regarding military funding and oversight issues.