The participation of Japanese combat troops for the first time in a multinational military exercise concluded today, marking a symbolic inflection point in Indo-Pacific security architecture and reviving an intensifying strategic debate over whether regional middle powers should move toward an “Asian NATO” or embrace a more flexible doctrine of “pragmatic multi-alignment.”
The 41st iteration of the annual Balikatan 2026, held over 19 days from April 20 to May 8, was the largest in its history. Traditionally a bilateral drill between the Philippines and the United States, the exercise has evolved into a far broader multilateral platform, drawing participation from Australia, Japan, Canada, France, and New Zealand, alongside observers from 17 countries across Asia, Europe, and beyond.
Military officials described the 2026 edition as a transition point from bilateral training to what they termed a “multilateral deterrence architecture,” emphasizing integrated operations across land, sea, air, cyber, and space domains. Approximately 17,000 personnel participated in total, including roughly 10,000 from the United States. France contributed a smaller contingent, while Canada and New Zealand joined as active participants for the first time.
However, the most closely watched development was Japan’s deployment of 1,400 personnel, marking the first time since World War II that Japanese forces have participated in a multinational exercise involving potential combat interoperability beyond traditional self-defense constraints. The move is widely viewed as a milestone in Japan’s gradual transformation into a more assertive security actor in the Indo-Pacific.
Japan’s evolving posture has been years in the making. Since the constitutional reinterpretation advanced under late Prime Minister Shinzo Abe in 2014, Tokyo has steadily expanded the operational scope of the Japan Self-Defense Forces, enabling participation in collective self-defense missions when allies are attacked. This doctrinal shift has gradually dismantled postwar constraints that had defined Japanese defense policy for decades.
The transformation accelerated further under Prime Minister Fumio Kishida, whose government released landmark national security documents in 2022. The National Security Strategy of Japan and accompanying defense strategy described Japan’s security environment as “the most severe and complex since the end of World War II,” explicitly rejecting unilateral changes to the status quo by force and committing to a substantial strengthening of defense capabilities.
Kishida also initiated a historic increase in defense spending, aiming to raise it from the long-standing 1% GDP ceiling to 2% by 2027. That trajectory has since been accelerated under the current administration of Prime Minister Sanae Takaichi, who has brought forward the 2% target to fiscal year 2025 and is widely expected to deepen Japan’s security transformation. Policy proposals under her leadership include the establishment of a national intelligence agency, relaxation of restrictions on lethal weapons exports, and expansion of domestic defense production capacity.
Earlier, former Prime Minister Shigeru Ishiba had advanced one of the most ambitious regional security proposals in recent years: the creation of an “Asian NATO.” In policy circles and think tank discussions, the idea had circulated for years, but Ishiba gave it renewed political visibility. He argued that the region’s fragmented security architecture—reliant on bilateral alliances rather than collective defense—left it vulnerable to escalation and miscalculation.
In a widely cited commentary for the Hudson Institute, Ishiba wrote that “Ukraine today is Asia tomorrow,” warning that the absence of a NATO-like framework in Asia increases the likelihood of conflict. He proposed transforming existing US-led bilateral alliances with countries such as Japan, South Korea, Australia, the Philippines, and New Zealand into a formalized collective defense structure, potentially expanding to include ASEAN partners and India.
The concept of an “Asian NATO” has gained traction amid rising concerns over China’s assertiveness, North Korea’s nuclear capabilities, and growing strategic coordination among China, Russia, and North Korea. The proposal also reflects broader anxieties about the reliability of US commitments, particularly under the unpredictable foreign policy signaling associated with US President Donald Trump, whose “America First” approach has led allies to reassess long-term security dependencies.
Yet despite renewed interest in formalized alliances, many analysts argue that the Indo-Pacific is increasingly coalescing around a different logic—one that prioritizes flexibility over rigid treaty obligations.
A growing school of thought emphasizes “pragmatic multi-alignment,” a strategy in which middle powers maintain overlapping partnerships rather than exclusive alliances. This approach is especially attractive to countries seeking to avoid entrapment in great-power rivalry between the United States and China while still securing defense cooperation, economic integration, and technological access.
The debate has sharpened as middle powers such as India, Indonesia, South Korea, Australia, Canada, and several ASEAN states navigate intensifying geopolitical competition. These countries are increasingly seen not as passive actors but as strategic balancers actively shaping the regional order through dense networks of bilateral, trilateral, and minilateral arrangements.
A notable intellectual contribution to this debate comes from political scientist Kuik Cheng-Chwee of the Asan Institute for Policy Studies. In a recent monograph, Kuik argues that while an “Asian NATO” offers structural clarity, it risks excluding key regional actors who are unwilling to commit to rigid bloc politics. He warns that such exclusion could undermine broader stability at a time of global uncertainty.
Instead, he advocates for pragmatic multi-alignment as a form of “inclusive statecraft,” enabling states to simultaneously engage competing powers while expanding diversified partnerships. According to Kuik, this “alliance-plus” approach allows countries to retain core security ties—particularly with the United States—while building supplementary networks that enhance resilience in trade, technology, and defense supply chains.
He notes that under conditions often described as “Trump 2.0 uncertainty,” even traditional US allies are recalibrating from an “alliance-first” to an “alliance-plus” posture. This shift has opened space for middle powers to deepen cooperation in flexible, issue-based coalitions rather than binding treaty organizations.
The political momentum behind this approach was reinforced earlier this year when Canadian Prime Minister Mark Carney delivered a widely discussed address at the World Economic Forum in January 2026. Carney urged middle powers to act collectively in shaping global governance amid what he described as a fragmented and increasingly unstable international order.
Meanwhile, the concept of middle power diplomacy continues to evolve. Though definitions vary, analysts generally classify middle powers as states that lack superpower status but possess significant economic, diplomatic, or military capacity. In the Indo-Pacific, this includes a diverse group spanning developed economies such as South Korea, Japan, and Australia, as well as emerging powers like India and Indonesia.
These countries are increasingly engaging in what analysts describe as “strategic diversification.” Rather than choosing between Washington and Beijing, they are simultaneously deepening defense ties with the United States while maintaining robust economic relationships with China. They are also expanding partnerships with Europe and Gulf states, reinforcing a multi-layered diplomatic ecosystem that reduces dependency on any single power center.
Recent diplomatic developments underscore this trend. South Korean President Lee Jae-myung recently concluded a state visit to India (April 19–21, 2026), during which both sides announced a “Joint Strategic Vision (2026–2030).” The agreement aligns India’s Act East Policy with South Korea’s New Southern Policy, focusing on defense cooperation, technology collaboration, supply chain resilience, and a goal of doubling bilateral trade to $54 billion by 2030.
India’s role in this evolving architecture remains particularly significant. External Affairs Minister S. Jaishankar has consistently articulated a vision of strategic autonomy that aligns closely with the principles of multi-alignment. Under Prime Minister Narendra Modi, India has pursued a foreign policy balancing closer security engagement with the United States, economic pragmatism with China, and longstanding defense and energy ties with Russia.
As the Balikatan 2026 exercise concludes, the Indo-Pacific finds itself at a conceptual crossroads. One path points toward a formalized, treaty-based collective defense system modeled on NATO, designed to deter aggression through binding commitments. The other favors a looser, adaptive framework in which middle powers maintain autonomy while continuously reshaping partnerships based on shifting geopolitical and economic realities.
For now, neither model appears dominant. Instead, the region is increasingly defined by the coexistence of both visions—one seeking structure and deterrence, the other flexibility and resilience. The outcome of this contest may ultimately determine the architecture of security in the Indo-Pacific.
