AUKUS is Back; But the Indo-Pacific Needs More Than Submarines

by Somen Chatterjee

The Indo-Pacific is entering a volatile new phase—and Washington’s allies are bracing for impact. As the White House reassesses long-standing security commitments, it has collided with a region where China’s power is expanding faster than any U.S. review process can keep pace. The result is a landscape riddled with strategic uncertainty, even as the administration insists its “America First” lens will sharpen—not shrink—American influence.

Nowhere is this recalibration more consequential than in the Indo-Pacific, the world’s maritime superhighway and the frontline of China’s revisionist ambitions. Over the past decade, Washington helped stitch together a patchwork of minilateral security groups—AUKUS, the Quad, and more recently the Squad—that collectively act as a loose architecture to deter Beijing’s advances. Under Trump, all three found themselves under scrutiny, prompting a wave of anxiety in Canberra, Tokyo, New Delhi, and Manila.

But the president’s recent meeting with Australian Prime Minister Anthony Albanese delivered one major sigh of relief. Trump reaffirmed that the U.S. will move forward with its commitment to provide Australia with conventionally armed, nuclear-powered submarines under AUKUS. The decision ends months of speculation that the pact would be shelved or gutted. But if the administration thinks that delivering submarines settles America’s Indo-Pacific strategy, it misunderstands the region’s evolving security demands.

AUKUS Is Back—But the Indo-Pacific’s Problems Didn’t Pause

When the White House announced earlier this year that AUKUS was “under review,” many observers saw the move as a bellwether for a potential U.S. drawdown. That concern wasn’t unfounded. The Quad was staggering under growing tensions between Washington and New Delhi, raising doubts about whether India would even host the next leader-level summit in 2026. The Squad—an emerging but fragile grouping of the U.S., Japan, Australia, and the Philippines—had stalled amid China’s increasingly brazen behavior in the South China Sea.

Placing all three groupings under scrutiny at once suggested not strategic flexibility but strategic drift.

But AUKUS, more than the others, is the backbone of long-term allied military deterrence in the Indo-Pacific. It serves two core purposes: supplying Australia with nuclear-powered submarines capable of operating undetected for months, and accelerating shared technological innovation in domains like cyber, AI, and undersea warfare. These are precisely the capabilities needed to counter China’s naval expansion and gray-zone tactics.

The good news is that Trump ultimately sided with the strategic logic of AUKUS over the temptation to treat allies like mere customers in a transactional geopolitical marketplace. But reviving AUKUS should be seen as the beginning, not the culmination, of a coherent Indo-Pacific strategy.

A Patchwork by Design

Critics often lament that the Indo-Pacific lacks a NATO-style umbrella. But that analogy misses the strategic geography. The region isn’t one theater—it’s several. China’s behavior is not uniform across them. In the South China Sea, Beijing relies on harassment, militia swarms, and the steady militarization of contested features. In the Indian Ocean, it expands influence more subtly: financing port infrastructure, expanding naval access, and cultivating political ties across littoral states.

One architecture cannot manage all these challenges. That is why various minilateral groups—each focused on discrete sub-regions or problem sets—have emerged. AUKUS advances hard deterrence. The Quad’s agenda is broader: maritime domain awareness, coast-guard coordination, health supply chains, emerging tech, and humanitarian response. The Squad is meant to secure the South China Sea, where China’s provocations against the Philippines and others have turned increasingly dangerous.

Taken together, these groupings form a mosaic that upholds a free and open Indo-Pacific. Weakening any one part weakens the whole.

The Quad and the Squad Need Urgent Revival

Now that AUKUS appears stabilized, the hard part begins: resuscitating the Quad and breathing life into the faltering Squad.

The Quad—linking the U.S., Japan, Australia, and India—is far more than a naval coordination mechanism. Over the years it has become the region’s most multifaceted platform, shaping norms on everything from supply chains to humanitarian relief. But its future hinges on the U.S.–India relationship. Recent frictions—including disputes over trade, technology transfers, and India’s concerns about U.S. commentary on its domestic politics—have strained trust.

If Trump wants to keep the Indo-Pacific from unraveling, repairing ties with New Delhi will be essential. India is not a treaty ally, but it is the only member of the Quad with the demographic, geographic, and economic heft to balance China over the long term.

The Squad, meanwhile, is the most operationally urgent grouping, even if it is the least developed. China’s aggressive maneuvers around Second Thomas Shoal and other contested areas of the South China Sea threaten not only Philippine sovereignty but global maritime trade. Manila, Tokyo, and Canberra are ready for deeper cooperation. What’s missing is consistent U.S. leadership. Without a functioning Squad, deterrence in the South China Sea will remain dangerously thin.

Trump’s Choice: Build or Break the Architecture

The Indo-Pacific is not waiting for Washington to get its bearings. China is testing red lines. Allies are hedging. Nations from Vietnam to South Korea are recalculating how much they can depend on the United States.

The administration’s decision to press ahead with AUKUS suggests Trump recognizes the Indo-Pacific’s significance. But reviving one pillar is not enough. The U.S. must invest political capital in restoring the Quad’s momentum and finally operationalizing the squad.

AUKUS offers Australia submarines. But the Quad offers governance. The Squad offers frontline deterrence. Only together do they offer strategy.

America’s “America First” era can still be compatible with an Indo-Pacific that remains free, open, and governed by rules rather than coercion. But that requires more than reviewing alliances—it requires using them.

Washington has reopened the door with AUKUS. Now it must walk through it.

  • Somen Chatterjee

    Dr. Somen Chatterjee is a leading Indian policy analyst and Asia expert with over 12 years of experience in strategic studies and regional diplomacy. He earned his PhD in International Relations from Jawaharlal Nehru University and has been a visiting scholar at premier Indian institutions.

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