The U.S. military does not withdraw "roots" in Asia: the first island chain rejection system accelerated, and the Chinese Communist Party's expansion of space was systematically crushed

U.S. Deputy Secretary of War for Policy Affairs Elbridge Colby released an unusually clear signal in Manila on August 10 that the U.S. would not withdraw from Asia, but would rather be prepared to deepen its Indian-Pacific roots.

Corby, speaking at the Institute for Strategic Base Studies in Manila on the same day, said that the core interests of the United States in Asia determined its long-term presence, and that the United States "will not leave" but continue to "root" in the region to ensure that the Indo-Pacificins a favorable balance of forces.

The amount of this word is far more than an ordinary ally reassured.

Three days ago, the U.S. Department of War announced that Corby had jointly embarked on a trip to the Philippines, Indonesia, Thailand and Cambodia with Assistant Secretary for Indo-Pacific Security Affairs John Noah to discuss bilateral security relations with the four governments and senior officials.

If you look at only Corby’s words of the day, it doesn’t seem that Beijing has been directly attacked by the speech. The Associated Press also noted that Corby deliberately avoided focusing on China as some previous U.S. officials did. But if you put his speech together with the strategic documents already released by the Trump administration, the CCP is the clearest target of this whole array of military arrangements.

The U.S. National Defense Strategy 2026 has written this clearly.

In discussing China’s massive military expansion, the strategic document clearly states that the U.S. goal is to prevent any force, including China, from acquiring the ability to dominate the U.S. and its allies. The military means of achieving this goal is to establish a strong denial defense along the first island chain while pushing regional allies and partners to increase their military contributions. The document then further points out that the military contributions of allies and partners play a key role in “distracting and balancing China.”

This means that the Japanese islands, Taiwan, and the Philippines have been extending south to the first island chain near Borneo, from a long-standing geographical concept on the strategic map, gradually becoming a set of real military systems with clear operational objects, bases, troops, ammunition, logistics and allied participation.

The U.S. National Security Strategy 2025 has even linked the system directly to Taiwan and the South China Sea. The document requires the U.S. military to have the ability to reject aggression anywhere in the first island chain, while demanding alongside allies and partners to give the U.S. military more access to ports and facilities, increase military spending, and invest in military capabilities that can implement the rejection of combat. The document clearly states that these measures will strengthen the U.S. and allies’ ability to prevent any party from seizing Taiwan, while preventing a single power from controlling the South China Sea.

So, as Corby calls the United States “rooted” in Asia, what Beijing really deserves to warn is not whether the United States will add a few more traditional military bases, but a completely different war preparation model is being formed.

In the past, the Chinese Communist Party could understand the US military presence in Asia as several large military bases, aircraft carrier battle groups and independent alliances between the United States and Japan, South Korea and the Philippines.

The Philippines became an important backbone in the southern section of the first island chain, Japan undertook the rejection mission in the northeast Asian direction, Taiwan is located in the most sensitive central position of the entire chain, while Indonesia, Thailand south of the Philippines and the wider Southeast Asian countries are able to provide greater strategic depth for maritime channels, logistics supply, military training, intelligence surveillance and troop mobilization.

Corby’s visit to four Southeast Asian countries has a different meaning than a general diplomatic visit.

The Philippines is one of the oldest U.S. joint defense treaty allies in Asia and one of the most frequent maritime conflicts with Beijing in the South China Sea in recent years. The United States has repeatedly confirmed that if the Philippine army, government vessels or aircraft are attacked by armed forces in a region including the South China Sea, the U.S. Joint Defense Treaty will apply. Meanwhile, U.S. joint military exercises continue to expand and the Philippine military is becoming an important part of the U.S. first island chain rejection strategy.

The position of Indonesia and Thailand further demonstrates that the United States is extending its strategic touch to the back of the first island chain. Indonesia controls the important archipelago waterways connecting the Pacific and the Indian Ocean, while Thailand is a long-standing military partner of the United States. They will not necessarily become an open “anti-Chinese alliance”, but as long as the United States can expand its training, intelligence, logistics, arms sales and military interoperability capabilities, the environment faced by Beijing’s military and political pressure in the South China Sea and Southeast Asia will change.

For a long time, Beijing has had enormous political, economic and strategic influence in Cambodia. Colby this time included Phnom Penh in the four-country trip, and it is not currently possible to judge the Cambodian policy towards China has shifted, but Washington has begun to actively deepen Beijing's traditional influence strong Southeast Asian countries, has shown itself the U.S.-China competition is pushing to a deeper regional level.

What really deserves to be worried about is here.

China’s regional expansion over the past two decades has led to the rapid growth of China’s economic and military strength, while its neighbouring countries are highly fragmented in the face of Beijing. Beijing can deal with Japan, Taiwan, the Philippines, Vietnam, India and other Southeast Asian countries separately, and use differences in interests to prevent the formation of a complete regional balancing system.

It is this structure that the United States is now trying to change.

Corby proposed not to make all Asian countries American subjects, but to demand that these countries increase their military spending, expand their armed forces, and connect with the U.S. military system. he repeatedly stressed that the U.S. needs “partners, not protected nations.” From a military perspective, if this model is really implemented, the pressure on Beijing may instead be more lasting than simply increasing the U.S. military presence, because it means that the Chinese facing is no longer just the U.S., but a group of neighboring countries that gradually have the ability to refuse independence and can work with the U.S. military.

The U.S. National Defense Strategy 2026 has summarized this change very clearly: the first island chain establishes defence rejection, allies increase military burden, the U.S.ins key military capabilities, and ultimately forms a regional power structure that can “distract and balance China.”

This also explains why China has been constantly opposed to expanding military cooperation between the United States and Japan, the Philippines and other Asian countries in recent years.

The real risk Beijing faces is not which military exercise or which missile sets enter Asia, but the growing number of military nodes around China that can be interconnected.Once the use of bases, long-range missiles, marine surveillance, unmanned combat systems, ammunition reserves, decentralized logistics and allied coordination are gradually forming a system, the cost of attempting to change the status quo of the Taiwan Sea or the South China Sea through short-term military operations will rise dramatically.

The core of America’s so-called “rejection of deterrence” is also here: it’s not a pledge to destroy China after the outbreak of the war, but to let Beijing calculate before it starts the war that military goals are difficult to, and the cost is unbearable.

So when Corby travelled to Jakarta, Bangkok and Phnom Penh from Manila, the real signal was not simply “America back to Asia.”

The United States has never really left Asia.

What is changing is that the United States has begun to reorganize its originally dispersed allies, partners, military bases, ports, logistics and defense capabilities around China, and to build a more dispersed, more difficult to destroy, and more dependent on the region’s own forces.

For the Chinese Communist Party, which has long sought to change the status quo in Taiwan, expand control in the South China Sea and gradually deploy U.S. military forces to the western Pacific, this means that the strategic space that could be used in the past is being closed a little bit.

This does not alone prove that the CCP regime is on the brink of immediate collapse, but it reveals a reality that is increasingly unfavorable to Beijing: the regional power environment that the CCP has relied on in the past is reversing. Beijing needs to invest more and more military, financial and diplomatic resources in order to maintain its position in the past; any further military adventure may face both the United States and an increasingly forming regional rejection network.

What Corby says is that the United States is “rooted” in Asia, from another perspective, means that a deeper and deeper strategic foundation is emerging around the Communist Party of China.

For the Communist Party of China, which considers nationalism, military expansion and the so-called “rise of great powers” as an important pillar of the legitimacy of the regime, the most dangerous situation is not necessarily a sudden decisive defeat one day, but the continuous shrinking of the external expansion space, the cost of military adventure continues to rise, and the surrounding countries are increasingly reluctant to accept Beijing’s leadership, while the Communist Party of China must pay an increasing price to maintain a strong country’s narrative.

The changes that are taking place in the first island chain are an increasingly concrete reflection of this situation.