Beyond Brotherhood: Vietnam’s New Playbook for Laos

On 5 February, To Lam, the freshly re-elected General Secretary of the Communist Party of Vietnam (CPV), touched down in Vientiane. This marked his third visit to Laos in just 18 months. Such a frequency might raise eyebrows elsewhere, but not when it comes to Vietnam’s ties with its landlocked western neighbour. Laos was To Lam’s first foreign destination when he became president in 2024, and again his first stop after the 14th Party Congress in January. No Vietnamese leader in recent memory has lavished such attention on Vientiane. The pattern is deliberate, and it reveals how the new Vietnamese leadership is recalibrating its foreign policy in a rapidly shifting region which has become increasingly tilted towards China.

The headline from the latest visit was a new addition to the boilerplate language that defines the bilateral relationship. Alongside the usual litany of “great friendship, special solidarity and comprehensive cooperation”, both sides now speak of “strategic cohesion” (gắn kết chiến lược). Though seemingly innocuous, the term signals a rethinking of ties: one that goes beyond revolutionary nostalgia towards a functional, forward-looking alignment. At its core, “strategic cohesion” gestures toward synchronising not just foreign policy postures but development strategies, infrastructure planning and governance models.

The substance behind the slogan is already taking shape. Vietnam and Laos signed a memorandum to establish the first Vietnamese university in Laos. This is a project that moved from idea to ink in just two months. Construction on a long-delayed railway from Vientiane to Vietnam’s Vung Ang Port is expected to begin on the Lao side later this year. This is part of a USD6.6 billion project to connect Laos to the sea. In an unusual move, Hanoi has granted Laos a 60 per cent stake in the port. In December 2025, Laos rolled out a national digital citizen identification system built with Vietnamese technical assistance, modelled on VNeID, Hanoi’s ambitious government super-app. The “cohesion” is not just about physical connectivity; Vietnam wants to take Laos by the arm in the virtual space, too.

Why the urgency? The answer lies in a phrase that has become the leitmotif of To Lam’s leadership: strategic autonomy (tự chủ chiến lược) is shorthand for fostering Vietnam’s independence and resilience amid a fluid geopolitical environment. Since taking the party’s helm, he has elevated this concept from a diplomatic nicety into a governing philosophy, embedding it in the 14th Congress’s documents as a core orientation. But autonomy needs insulation – and here, Vietnam sees trouble.

For decades, Vietnam relied on shared revolutionary sacrifice to keep Laos close. But sentiment alone is a depreciating asset in a world where China writes the bigger cheques.

Vietnam’s overtures to Laos are not merely altruistic. China’s footprint in Laos has grown enormous over the past decade. Beijing has become Laos’s largest trading partner and biggest source of foreign investment, with a cumulative total of around USD18 billion. The China-Laos railway, completed in 2021, has physically reoriented Laos’s trade routes northward. With Laos struggling under the weight of debt-fuelled infrastructure spending — much of it bankrolled by Beijing — Hanoi fears that economic dependence will translate into strategic drift towards China, which has a longstanding dispute with Hanoi in the South China Sea.

Vietnam is also seeking to build some functional cooperation with Laos for strategic gain. For decades, Vietnam relied on shared revolutionary sacrifice to keep Laos close. But sentiment alone is a depreciating asset in a world where China writes the bigger cheques. The new framework, then, is an admission that fraternity is no longer enough.

“Strategic cohesion”, thus, is Hanoi’s answer to China’s Belt and Road Initiative — not in terms of scale, but in kind. Where Beijing offers roads and loans, Vietnam counters with shared bureaucratic systems, education pipelines and governance templates. The rail and road connections to Vietnamese central seaports would offer Laos its only trade corridor to the sea. The Vietnam University in Laos would cultivate a new generation of Lao professionals educated in Vietnamese systems, much as the revolutionary generations before them built personal ties that have long anchored the relationship. Lao leader Thongloun Sisoulith, for example, speaks perfect Vietnamese. The transfer of digital governance technology also creates institutional interoperability that loans and concrete cannot easily replicate.

Hanoi’s strategy also has a trilateral dimension. Immediately after leaving Vientiane, To Lam and Thongloun Sisoulith flew to Phnom Penh together to meet Cambodian strongman Hun Sen. Following last year’s unprecedented summit in Ho Chi Minh City, this shows Vietnam’s effort to institutionalise a tighter Indochina framework after the sudden dissolution of the Cambodia-Laos-Vietnam Development Triangle Area in 2024. The aim is to keep the Indochinese neighbourhood aligned – and to prevent either Vientiane or Phnom Penh from drifting too far into Beijing’s embrace.   

None of this is without risk. The Vietnamese economy, for all its impressive eight per cent growth in 2025, is still a fraction of China’s and thus cannot outspend Beijing in Laos. The Vientiane-Vung Ang railway carries some symbolism but it faces daunting engineering and funding challenges. Laos, for its part, may still hedge, playing one suitor off against the other. This is a skill that Cambodia has long mastered.

But To Lam appears to have calculated that the cost of inaction is higher than the cost of engagement. A Laos that is wired into Vietnamese-built infrastructure, trained in Vietnamese systems and tied into Vietnamese digital platforms is less likely to stray. It may not be a satellite, but it will be anchored, perhaps even cohesive.

For outsiders, “strategic cohesion” may sound like just another piece of communist jargon. In practice, it marks a practical shift in Vietnam’s foreign policy: the era of sitting back and adapting to circumstances is over. The time for Vietnam to actively shape its regional environment has begun.

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