Indonesia’s planned acquisition of the supersonic BrahMos missile from India could dramatically reshape the strategic landscape of Southeast Asia, potentially transforming the world’s largest archipelago into a powerful maritime barrier stretching between the South China Sea and the Indian Ocean.
The deal, still awaiting final confirmation, represents more than a conventional arms purchase. Analysts say it could strengthen Indonesia’s ability to control vital sea lanes and chokepoints used by global shipping — routes that are especially critical for China’s trade and energy imports.
If deployed strategically across its thousands of islands, the missile system could allow Indonesia to establish a network of land-based anti-ship defenses capable of denying hostile forces access to its surrounding waters. In doing so, Jakarta would gain a new tool to safeguard maritime sovereignty while playing a more consequential role in the evolving balance of power in the Indo-Pacific.
Earlier this month, news agency Reuters reported that Indonesian Defense Ministry spokesperson Rico Ricardo Sirait confirmed Jakarta had agreed with New Delhi to procure the BrahMos missile system as part of a broader effort to modernize the country’s armed forces.
The system, produced by BrahMos Aerospace—a joint venture between India and Russia—is one of the fastest operational cruise missiles in the world.
The export version of BrahMos has a range of roughly 290 kilometers and travels at speeds approaching Mach 3, nearly three times the speed of sound. It carries a 300-kilogram high-explosive warhead and can be launched from multiple platforms, including aircraft, warships, submarines and land-based mobile launchers.
Guidance systems combine satellite navigation networks such as GPS, Russia’s GLONASS, and India’s regional GAGAN navigation system to deliver high precision against both land and maritime targets.
Sirait confirmed the agreement but declined to disclose the contract value. However, earlier estimates from BrahMos Aerospace suggested negotiations with Indonesia involved a potential deal worth between US$200 million and US$350 million. According to Indian defense research institutes, each missile costs roughly US$4.75 million.
If finalized, Indonesia would become only the second foreign operator of the missile after the Philippines, which signed a landmark export agreement with India in 2022.
Although modest in scale, the Philippine purchase marked India’s breakthrough in exporting high-end missile systems to Southeast Asia. Indonesia’s potential entry into the BrahMos club would represent an even larger strategic step.
Indonesia’s interest in acquiring BrahMos is rooted in its unique geography.
The country is composed of more than 17,000 islands stretching across key maritime corridors linking the Pacific and Indian oceans. These waters form some of the world’s most important shipping routes, carrying a significant share of global trade and energy flows.
At the center of Jakarta’s concerns lies the northern edge of its maritime territory near the Natuna Islands.
The islands sit close to overlapping maritime claims in the South China Sea, where Chinese fishing fleets and coast guard vessels have repeatedly entered waters claimed by Indonesia as part of its exclusive economic zone.
While Indonesia does not consider itself a direct party to the South China Sea disputes, tensions have repeatedly flared over Chinese activities near the Natunas.
In December 2019, dozens of Chinese fishing vessels—escorted by coast guard ships—entered waters near the islands. The incursion triggered a sharp response from Jakarta.
The government summoned the Chinese ambassador, deployed warships and fighter jets, and sent Indonesian fishing vessels to assert its presence.
Then-president Joko Widodo took the unusual step of visiting the islands aboard a missile-armed warship in January 2020, sending a symbolic message that Indonesia would not compromise on its territorial sovereignty.
“We have no room for bargaining,” Widodo declared at the time.
Tensions resurfaced again in October 2024 when Indonesia’s Maritime Security Agency escorted a Chinese coast guard vessel away from the North Natuna Sea after it disrupted seismic survey operations conducted by state energy company Pertamina.
Analysts interpreted the incident as a test of the newly installed administration of Prabowo Subianto, who had recently taken office as president.
Indonesia’s geography offers a strategic advantage that few countries possess: control over maritime chokepoints that connect major oceans.
Several of these routes — including the Malacca Strait, Sunda Strait, Lombok Strait and Makassar Strait — are essential corridors for global shipping.
A significant portion of China’s oil imports and trade flows pass through these waterways on their way from the Middle East and Africa to East Asia.
Strategic analysts argue that Indonesia’s control of these routes provides powerful geopolitical leverage.
If land-based anti-ship missiles like BrahMos were deployed across key islands near these chokepoints, Indonesia could theoretically threaten any hostile naval force attempting to transit them.
Such a deployment would create a layered anti-access defense network capable of monitoring and potentially striking vessels passing through Indonesia’s archipelagic sea lanes.
In effect, the country’s geography could become a vast natural missile platform.
Strategic researchers writing in The Strategist argue that the mere possibility of disruption to these sea lanes would make any major power think twice before escalating tensions with Indonesia.
Because China’s economic lifelines depend so heavily on maritime trade through Southeast Asia, maintaining stable relations with Jakarta remains crucial for Beijing.
This dynamic gives Indonesia greater room to resist pressure during disputes over the Natuna Islands without necessarily jeopardizing economic ties with China.
The BrahMos missile has increasingly become associated with the concept of anti-access/area denial, commonly known as A2/AD.
In simple terms, A2/AD strategies aim to prevent an adversary’s military forces from entering or operating freely within a specific region.
Land-based anti-ship missiles are particularly effective tools in such strategies because they can threaten naval vessels from concealed positions along coastlines or islands.
For Indonesia, deploying BrahMos batteries across strategic islands could create overlapping strike zones covering large areas of surrounding seas.
This would complicate the operations of any hostile fleet attempting to operate near Indonesia’s maritime territory.
India’s export of BrahMos to Southeast Asian partners may also reflect a broader geopolitical strategy.
By equipping countries such as the Philippines and potentially Indonesia with advanced anti-ship missiles, New Delhi could help establish a network of regional partners capable of limiting Chinese naval expansion.
The Philippines has already begun deploying its BrahMos batteries to protect its western coastline facing the South China Sea.
If Indonesia follows suit, the two countries could form a loose missile-based deterrence belt stretching across critical maritime routes in Southeast Asia.
Such a development would indirectly reinforce India’s strategic position in the Indo-Pacific.
For India, the BrahMos deal represents a major milestone in its ambitions to become a significant global arms exporter.
Despite possessing a large domestic defense industry, India has historically struggled to compete with established arms suppliers such as the United States, Russia and European manufacturers.
The Philippine BrahMos sale marked the first major export of a sophisticated Indian missile system.
But weapons sales are rarely one-off transactions.
Systems like BrahMos require long-term maintenance, spare parts supply, operator training and periodic upgrades. This creates sustained defense relationships between supplier and buyer.
In other words, exporting BrahMos not only generates revenue but also deepens strategic partnerships.
If Indonesia becomes the system’s second export customer, India’s defense ties with Southeast Asia would expand significantly.
Such cooperation aligns with India’s broader “Act East” policy, which aims to strengthen political, economic and security relationships across the region.
From New Delhi’s perspective, supplying advanced missile systems to Southeast Asian partners also contributes to balancing China’s growing military influence.
Despite India’s growing prominence in the BrahMos program, Russia remains deeply embedded in the missile’s production chain.
BrahMos Aerospace is jointly owned by India and Russia, with Moscow holding roughly 49.5 percent of the venture.
Key components of the missile—including its ramjet engine and active radar seeker—are manufactured in Russia before final assembly takes place in India.
As a result, every BrahMos export deal requires Russian approval.
This dynamic highlights Moscow’s continuing role in the global arms trade despite the challenges it faces.
According to data from the Stockholm International Peace Research Institute, Russian arms exports have fallen sharply in recent years due to the war in Ukraine and growing competition from Western suppliers.
SIPRI estimates that Russia’s arms exports dropped by roughly 64 percent over the past five years.
Even so, Russia remained the world’s third-largest weapons exporter in 2025, behind the United States and France.
Nearly half of Russia’s foreign arms sales still go to India, reflecting the long-standing defense partnership between the two countries.
By participating in BrahMos exports, Russia maintains a foothold in markets that might otherwise drift entirely toward Western or indigenous suppliers.
Despite its advantages, Indonesia’s potential acquisition of BrahMos is not without complications.
One of the main technical challenges involves integrating the missile system with Indonesia’s existing military infrastructure.
Indonesia’s armed forces operate equipment sourced from a wide range of suppliers, including the United States, Europe, South Korea and Russia.
This diversity offers strategic flexibility but can create interoperability problems.
Defense analysts have noted that integrating BrahMos with Western-made coastal radar systems or combat management systems on Indonesian warships could require significant technical adjustments.
Logistics and maintenance also become more complex when a military relies on equipment from multiple countries.
Political considerations pose another potential challenge.
Because Russia holds a major stake in the BrahMos program, the missile could theoretically fall under the scope of the United States’ Countering America’s Adversaries Through Sanctions Act, or CAATSA.
The law allows Washington to impose sanctions on countries purchasing significant defense equipment from Russia.
Indonesia has already experienced the impact of this policy.
In 2021, Jakarta canceled a planned purchase of Russian Sukhoi Su‑35 fighter jets partly due to fears of potential US sanctions.
However, Washington has not imposed CAATSA penalties on BrahMos operators such as India or the Philippines.
Given the system’s role in strengthening regional deterrence against China, analysts believe the United States may be willing to overlook Indonesia’s purchase as well.
If Indonesia ultimately proceeds with the BrahMos acquisition, the decision will carry implications far beyond its immediate defense needs.
For Indonesia, the missiles would enhance its ability to defend maritime sovereignty and protect vital sea lanes.
For India, the deal would mark another breakthrough in its campaign to expand defense exports and deepen strategic partnerships in Southeast Asia.
For Russia, it would represent continued participation in international arms markets despite geopolitical isolation.
And for China, it would add another layer to the complex network of military capabilities emerging around the South China Sea.
Perhaps most importantly, the deal highlights how a single weapons system can alter the strategic calculus of an entire region.
Indonesia’s geography has always made it a pivotal maritime power. With the addition of supersonic anti-ship missiles, that natural advantage could be transformed into a formidable deterrent.
