By Julia Roknifard
The explosions echoing across the Middle East have sent shockwaves far beyond the region. As missiles fly over the Persian Gulf and maritime traffic faces unprecedented threats, the nations of Association of Southeast Asian Nations (ASEAN) confront a stark reality: Southeast Asia is only as secure as its most vulnerable supply line. Today, those lines – from the Persian Gulf through the Indian Ocean and into the region’s vital maritime corridors – are under growing strain.
For ASEAN economies, the implications are profound. Much of the region’s energy flows from the Middle East through the strategic chokepoint of the Strait of Hormuz before traversing the Indian Ocean toward Southeast Asia. From there, tankers and cargo vessels pass through the Strait of Malacca and into the contested waters of the South China Sea – arteries that sustain the region’s manufacturing, trade, and economic growth.
When shipping lanes become dangerous or insurance premiums surge, the consequences ripple across Southeast Asian economies. For countries heavily dependent on imported energy, disruptions do not merely slow growth, they threaten economic stability itself. The majority of Southeast Asia’s trade moves by sea, and energy imports remain the backbone of industrial activity from petrochemicals to transportation. Even modest disruptions in tanker traffic can quickly translate into higher electricity costs, food prices, and inflation across the region.
Yet the crisis unfolding thousands of kilometres away should serve not merely as a warning. It should be a catalyst for ASEAN to strengthen resilience across energy, food security, maritime logistics, and defense cooperation.
The New Arithmetic of Vulnerability
The immediate challenge is energy and food security. Southeast Asia’s dependence on imported fuel exposes the region to geopolitical shocks far beyond its borders. Volatile oil prices, disrupted tanker routes, and higher shipping costs can quickly cascade through fertilizer production, agriculture, and food distribution.
Energy insecurity also feeds directly into food insecurity. Fertilizer production depends heavily on natural gas, while rising fuel costs increase transportation expenses for farmers and food distributors alike. In a region where tens of millions still rely on affordable staple imports, these disruptions can have profound social and economic consequences.
Recognizing these risks, ASEAN governments have begun discussing emergency measures such as shared petroleum reserves, coordinated supply chain responses, and mechanisms to keep regional markets open during crises. But temporary measures alone cannot address structural vulnerability.
Consider the region’s dependence on maritime trade. The Strait of Malacca alone carries roughly a quarter of global commerce and serves as a critical artery connecting East Asian economies with the Middle East, Europe, and Africa. The conflict has already spread across the Persian Gulf, increasing maritime threats in the Indian Ocean, every tanker and container vessel bound for Southeast Asia are now exposed.
Diversifying energy sources—including renewable power, regional electricity interconnection, and expanded strategic petroleum reserves—must therefore become a strategic priority. Long-discussed initiatives such as the ASEAN Power Grid should now be treated as essential components of regional security rather than distant development goals.
Learning the Logic of Asymmetric Defense
The conflicts of recent years, from the Russia–Ukraine War to ongoing tensions in the Middle East, have revealed the growing power of asymmetric defense strategies. Smaller states need not match great powers ship-for-ship or aircraft-for-aircraft. Instead, they can impose costs through layered systems designed to deny access and complicate hostile operations.
Across Southeast Asia, elements of this approach are already emerging.
Vietnam has modernized its maritime forces with submarines and coastal missile systems designed to deter stronger adversaries. Philippines has deployed supersonic coastal missile batteries that dramatically extend its maritime reach. Indonesia is strengthening its own coastal defense capabilities as part of a broader strategy to secure its vast archipelagic waters.
These initiatives illustrate a broader lesson: deterrence in Southeast Asia will rely increasingly on distributed capabilities – coastal missile batteries, unmanned systems, surveillance drones, maritime mines, and integrated sensor networks that make aggression risky and uncertain.
For maritime states such as Malaysia, where the overwhelming majority of trade travels by sea, sea-denial strategies offer a practical means of safeguarding national interests without pursuing prohibitively expensive naval expansion.
Integrating Security Forces for Mutual Defense
Yet national capability alone cannot guarantee regional stability. ASEAN’s security architecture remains fragmented, with cooperation often slower than the pace of crises.
The ASEAN Defence Ministers’ Meeting-Plus (ADMM-Plus) has emerged as an important platform for cooperation, facilitating joint exercises, dialogue, and collaboration on issues ranging from maritime security to humanitarian assistance.
Equally promising is the development of the ASEAN Direct Communications Infrastructure, designed to create secure channels linking defense establishments across the region. Such systems could allow military authorities to communicate directly and rapidly during emergencies – an essential capability in an era where crises unfold in real time.
The long-term goal should be deeper operational integration: shared maritime awareness networks, coordinated patrols in vulnerable sea lanes, joint exercises focused on protecting energy infrastructure, and crisis response mechanisms that allow ASEAN states to act collectively when supply chains or security are threatened.
Building a Regional Defense Industrial Base
Strategic resilience also requires industrial capability. Many ASEAN militaries remain heavily dependent on imported equipment, leaving them vulnerable to supply disruptions during geopolitical crises.
Several countries are already taking steps to strengthen domestic defense industries. Expanding these efforts through regional collaboration could bring significant benefits. Joint procurement programs, shared technology development, and coordinated acquisition strategies would reduce costs while enhancing interoperability among ASEAN armed forces.
Developing capabilities in areas such as drones, maritime surveillance systems, cyber defense tools, and coastal missile technology could also stimulate high-tech industries within the region while strengthening deterrence.
Protecting the Merchant Fleet and Port Infrastructure
Even the most capable military forces cannot guarantee security if critical infrastructure remains vulnerable. ASEAN’s ports, shipyards, and merchant fleets form the backbone of regional trade, yet many face rising threats ranging from cyberattacks and sabotage to illicit trafficking networks that exploit maritime logistics hubs.
Strengthening port security, enhancing maritime surveillance, and improving coordination among customs authorities, coast guards, and naval forces must therefore become a priority.
Equally important is the protection of shipping itself. ASEAN states should explore mechanisms for coordinating maritime patrols, sharing intelligence on shipping threats, and potentially escorting vulnerable merchant vessels during periods of heightened tension in strategic sea lanes.
A Moment of Strategic Choice
The turmoil in the Middle East is a reminder that Southeast Asia’s security environment is shaped not only by regional dynamics but also by distant conflicts that disrupt global trade.
For ASEAN, there is a glaring lesson that resilience must become the foundation of regional strategy – through diversified energy systems, secure food supply chains, stronger asymmetric defenses, integrated security cooperation, and protected maritime infrastructure.
ASEAN already possesses the institutions and mechanisms necessary to pursue these goals. What is required now is the political will to act collectively.
In an increasingly uncertain world, no member state can guarantee its security alone. But together, ASEAN can ensure that its sea lanes remain open, its economies resilient, and its future secure.
*Dr Julia Roknifard is a senior lecturer at the School of Law and Governance at Taylor’s University and lectures at the newly launched programme ‘Philosophy, Politics, and Economics’.*
