Guest Essay
A Historic Shift Is Underway in Asia
July 27, 2026
By Jennifer Kavanagh
Ms. Kavanagh is the director of military analysis at Defense Priorities.
A historic shift has gathered pace across Asia this summer.
With an eye on China’s growing power, other countries have drawn closer, revealing the contours of an emerging new security architecture.
Japan has strengthened defense ties with
Australia,
the Philippines and
India, and it is
discussing closer cooperation with South Korea. Japan has also
scrapped its longstanding restrictions on defense exports and is moving to
join South Korea as a regional arms supplier, while Australia has signed new agreements with
Pacific Island nations, including a mutual defense pact with Fiji.
Since President Trump’s return to office, uncertainty over his commitment to the defense of Asia has
sparked warnings that Beijing could seize the opportunity to be more assertive, pushing U.S. allies to band together.
Those wheels are now turning, bringing new risks: Major changes in global security rarely unfold smoothly.
Yet this doesn’t have to mean we are entering an era of instability for an economically dynamic part of the world that remains vital to U.S. strategic interests. An order in which Asian countries assume greater responsibility for their own defense and rely more on one another — and less on an increasingly distracted United States — could ultimately prove stable and secure.
At any rate, it is unavoidable. An
overextended United States is less prepared to underwrite Asia’s security indefinitely than it once was.
A transition to a more self-reliant Asia must be managed carefully.
If Beijing perceives a rapid weakening of American commitments or sees U.S. allies as newly vulnerable, it might conclude it has greater freedom to press its territorial and security ambitions, raising the specter of military confrontation.
Alarming as those developments sound, history has shown that Asian countries with diverse interests and forms of government can build working partnerships without deep U.S. participation. The 11-member
Association of Southeast Asian Nations, founded in 1967, is often
criticized as slow and indecisive in responding to shared challenges and has done little to counter China’s expansive territorial ambitions in the South China Sea. But ASEAN has helped to maintain peace among its members in a part of Asia previously
torn by decades of war and provided a framework for Southeast Asia to engage with China.
A more balanced sharing of the security burden needn’t weaken deterrence. Deeper cooperation between countries such as Japan, the Philippines and Australia would actually strengthen the first line of defense against security threats, backed up by a gradually reduced — yet still robust — U.S. military presence.
As U.S. allies become more capable and integrated, it is only fair that they
shoulder more of the costs of their own protection, freeing up thinly stretched American forces to meet global security challenges elsewhere. The United States, for its part, could continue to coordinate closely with its Asia-Pacific allies, take the lead on tasks central to U.S. interests, such as keeping vital sea lanes open, and work to maintain stable relations with China.
That kind of allied system would be stronger militarily, more durable over the long term than one that is over-reliant on the United States and able to act collectively if American assistance is delayed or unavailable.
At any rate, the Middle East is proof that heavy American involvement is no guarantee that international rivalries won’t explode into conflict. The United States — along with Israel — started the war with Iran,
exposing America’s partners in the Persian Gulf to Iranian attacks and disrupting global trade. As a result, some
Gulf states are
rethinking their reliance on Washington and exploring ways to maintain their security through partnerships among themselves, which may even include Iran.
The United States will remain a power in the Pacific. But the strategic balance has already shifted. American allies and rivals alike are wealthier and more capable than they were a generation ago, and U.S. forces are overstretched. Asia is adjusting to that new reality.