Trans-Pacific View author Mercy Kuo regularly engages subject-matter experts, policy practitioners, and strategic thinkers across the globe for their diverse insights into U.S. Asia policy. This conversation with Looi Teck Kheong – ASEAN specialist consultant, advocate, and solicitor of the Supreme Court of Singapore and author of “The Enforcement Age: The Maduro Capture and the End of Strategic Patience” (2026) – is the 513th of “The Trans-Pacific View Insight Series.”
Explain why the conventional framing of kinetic conflict in the Strait of Malacca is incomplete.
The conventional framing assumes that the Strait of Malacca becomes strategically relevant only during a direct military confrontation involving blockade, mining, piracy escalation, or missile attacks. That view is increasingly incomplete because modern geopolitical competition is now conducted as much through regulatory coercion, sanctions, inspections, insurance restrictions, and compliance fragmentation as through kinetic force.
Malacca does not need to be physically closed to become dysfunctional. The more plausible disruption scenario is political and operational rather than military. A U.S.-China confrontation over Taiwan or the South China Sea could generate incompatible compliance demands on ASEAN littoral states without a single missile entering the Strait itself.
This transforms Malacca from a freedom-of-navigation issue into a contested governance corridor. The critical vulnerability is therefore not merely geography, but ASEAN’s ability to sustain credible neutrality under simultaneous pressure from both major powers.
That distinction matters because approximately one-fifth to one-quarter of global maritime trade and nearly 29 percent of maritime oil flows transit the Strait. The global economy is more vulnerable to prolonged uncertainty and fragmented compliance regimes than to short-duration kinetic shocks.
Describe the most plausible scenario of disruption to the Strait of Malacca and the key variables underpinning this scenario.
The most plausible scenario is not total closure, but conditional transit.
A limited Taiwan blockade or sustained South China Sea confrontation could lead both Washington and Beijing to demand selective inspections, overflight restrictions, cargo scrutiny, or port-access limitations targeting vessels linked to the opposing side’s logistics ecosystem.
ASEAN states such as Singapore, Malaysia, and Indonesia would then face mutually incompatible demands. Compliance with one side risks being interpreted as alignment against the other.
The key variables underpinning this scenario include:
- Intensity and duration of U.S.-China confrontation – whether tensions remain episodic or evolve into sustained strategic coercion.
- Degree of sanctions escalation – especially involving dual-use technologies, semiconductors, energy cargoes, and military-linked supply chains.
- ASEAN political cohesion – whether ASEAN members can maintain a coordinated neutrality posture or fragment into divergent national responses.
- Insurance and shipping market reactions – war-risk premiums and liability uncertainty may disrupt shipping rhythms even before physical threats emerge.
- Availability of rerouting alternatives – Lombok and Sunda Straits provide alternatives, but at substantial cost, delay, and congestion risk.
In this scenario, trade does not stop immediately. Instead, predictability collapses. That is often more economically damaging than outright closure because modern supply chains depend on timing precision rather than merely physical movement.
Examine the strategic relevance of the Strait of Malacca in China-U.S. geopolitical competition.
The Strait of Malacca sits at the intersection of energy security, maritime trade, and Indo-Pacific power projection. It is central to China’s long-standing “Malacca Dilemma,” reflecting Beijing’s concern that external powers could threaten critical sea lines of communication.
China relies heavily on the Strait for imported energy and trade flows linking the Middle East, Africa, and Europe to East Asia. Meanwhile, the United States views open maritime access and freedom of navigation as foundational to the regional order it has underwritten since the end of World War II.
This creates an asymmetric strategic reality. China sees Malacca as a vulnerability; the United States sees it as a guarantor of maritime openness. ASEAN sees it as an economic lifeline that must remain politically neutral.
The Strait therefore represents more than a shipping lane. It is a test of whether middle powers can preserve strategic autonomy amid intensifying great-power rivalry.
Unlike the Cold War, however, today’s contest is deeply integrated economically. Both the U.S. and China are embedded within the same global supply chains transiting Malacca. This means future competition is likely to target selective disruption, regulatory leverage, and technological chokepoints rather than absolute interdiction.
Analyze ASEAN’s structural dilemma in managing a Strait of Malacca crisis similar to that in the Strait of Hormuz.
ASEAN’s structural dilemma lies in the contradiction between economic interdependence and geopolitical non-alignment.
The Strait of Hormuz model demonstrates how strategic waterways can become conditional transit corridors shaped by geopolitical signaling and selective permissions rather than outright closure. A similar dynamic in Malacca would place ASEAN in an extraordinarily difficult position.
If ASEAN states comply with U.S. demands, China could interpret ASEAN as participating in containment. If they comply with Chinese demands, Washington may interpret ASEAN as enabling Chinese strategic logistics. Attempting case-by-case neutrality risks accusations of inconsistency or bad faith from both sides.
The problem is compounded by the absence of operational regional mechanisms for maritime deconfliction. ASEAN possesses diplomatic forums, but not robust crisis management architecture capable of handling simultaneous great-power pressure over shipping access, inspections, and sanctions compliance.
This creates the risk that ASEAN neutrality becomes operationally impossible even if politically declared.
The challenge is therefore not merely diplomatic. It is institutional and structural.
Assess the three theoretical options available to ASEAN stakeholders in a China-U.S. confrontation over the Strait of Malacca. What would be the commercial consequences of a prolonged stalemate if deconfliction is ineffective?
ASEAN stakeholders effectively face three theoretical options.
First, align primarily with U.S. demands. This preserves relations with the dominant naval power but risks severe Chinese economic retaliation and the perception that ASEAN has become part of a containment architecture.
Second, accommodate Chinese demands. This may reduce immediate regional tensions with Beijing but risks secondary sanctions, strategic distrust from Washington, and investor concerns regarding political neutrality.
Third, attempt calibrated neutrality through selective or case-by-case enforcement. This is the most likely path but also the most unstable because both powers may perceive inconsistency as strategic manipulation.
If deconfliction fails, the commercial consequences could become severe even without formal closure of the Strait.
These include prolonged port delays, insurance surcharges, blank sailings, diversion toward Lombok and Sunda routes, and disruption of just-in-time manufacturing systems across ASEAN and Northeast Asia. Semiconductor, automotive, energy, and commodity supply chains would experience rhythm disruption before outright flow disruption.
The long-term danger is that firms begin structurally diversifying away from Malacca-dependent supply chains altogether. Once supply-chain trust erodes, rebuilding it becomes extraordinarily difficult.
In that sense, the greatest threat to Malacca is not military destruction. It is the gradual loss of confidence in the reliability of neutral transit.