KOTA KINABALU, Malaysia — A recent remark by Indonesia’s finance minister about exploring the possibility of charging passing vessels in the Strait of Malacca quickly sent ripples across the international community. Coming at a time when the Strait of Hormuz is once again under scrutiny over potential disruptions, the suggestion could hardly have surfaced at a more sensitive moment. After all, just as roughly one-fifth of the world’s oil supply transits through Hormuz, nearly one-third of global trade passes through the Malacca Strait. The mere notion of tolls is enough to raise concerns about rising costs and systemic friction in global commerce. It is, therefore, unsurprising that Indonesia’s foreign minister has since stepped in to clarify that Jakarta has no intention of pursuing such a move.
Still, the episode has brought into sharper focus a set of underlying understandings that have long existed but are rarely articulated so plainly. Malaysia, for its part, has been conveying two seemingly divergent messages. On one hand, it insists that no party should act unilaterally in the strait. On the other, it reiterates that the waterway must remain open to global shipping. At first glance, these positions appear to pull in different directions. In reality, they reflect a calibrated response to different audiences and concerns.
The opposition to unilateral action is primarily aimed at the prospect of external powers — whether naval or regulatory — seeking to assert influence in a way that sidelines littoral states. It is also a subtle reminder that any governance of the strait ought to involve regional consultation rather than external imposition. Meanwhile, the emphasis on keeping the strait open speaks to a broader and more fundamental commitment: that the Malacca Strait remains a vital artery of global trade, and its uninterrupted operation is in the interest not only of Southeast Asia, but also of the world economy at large. These two positions are not mutually exclusive; they operate in parallel, each addressing a distinct dimension of the issue.
Legally, the Malacca Strait occupies a unique and somewhat delicate position. Under the framework of the United Nations Convention on the Law of the Sea (Unclos), it is classified as a strait used for international navigation. This classification confers upon vessels the right of “transit passage,” which entails continuous and expeditious movement through the strait without undue hindrance. Crucially, this means that while littoral states such as Malaysia, Indonesia and Singapore retain sovereignty over their respective territorial waters, that sovereignty is not absolute in practice. It is circumscribed by the obligation to accommodate international navigation.
In this sense, sovereignty in the Malacca Strait is best understood not as an unqualified right to control, but as a responsibility to manage. A littoral state’s role, therefore, resembles that of a steward rather than a gatekeeper. It is well within its rights to ensure navigational safety, enforce environmental standards, and maintain maritime security — whether through traffic separation schemes, anti-piracy operations, or vessel monitoring systems. These are accepted and indeed necessary functions. However, the line becomes considerably more contentious when it comes to restricting passage or imposing charges on transit vessels. Such measures would run up against the established norms of international maritime law.
Indonesia’s room for maneuver must also be aligned with Unclos. While it enjoys a distinct legal identity as an archipelagic state under Unclos, this does not override the regime governing international straits. Any suggestion of enhanced control or the introduction of user fees is therefore better interpreted as a strategic signal rather than an imminent policy shift. It reflects, perhaps, a desire to assert greater agency in the management of a critical waterway, but remains constrained by legal and practical realities.
Should disagreements over such issues persist or intensify, the likely outcome is not open confrontation but a prolonged period of calibrated friction. All parties involved are acutely aware of the stakes. Any disruption to the Malacca Strait would reverberate far beyond the region, affecting supply chains, energy markets, and trade flows worldwide. As such, even as states test the boundaries of their positions, they are equally careful not to cross thresholds that might trigger systemic instability. In this environment, international law and longstanding maritime practices continue to function as stabilizing anchors.
What deserves closer attention, however, is the potential precedent that such discussions might set. If the idea of levying charges on vessels transiting key chokepoints were to gain traction in the Malacca Strait, it could encourage similar moves elsewhere. Other strategic waterways might follow suit, gradually eroding the longstanding principle of relatively free navigation through international straits. The cumulative effect would be a more fragmented and conditional maritime order, with higher costs and greater uncertainty for global shipping.
For Asean, this presents a subtle but significant test. Member states inevitably have their own national interests and domestic considerations. Yet, as a collective, Asean has long championed openness, connectivity and the facilitation of trade. Divergence on an issue as central as the governance of a major international waterway could weaken the bloc’s coherence and credibility. Conversely, a coordinated approach — grounded in the principles of Unclos — would not only help manage expectations but also position Asean as a more effective stakeholder in the evolving landscape of maritime governance.
In the end, the debate over tolls in the Malacca Strait is less about immediate policy change and more about the boundaries of sovereignty in an interconnected world. It underscores a fundamental tension: between the rights of states and the imperatives of global commons. How Southeast Asian countries navigate this tension will not only shape the future of the strait itself, but also contribute to defining the norms that govern the world’s most critical sea lanes.
