Fleeing Việt Nam No Longer Means Escaping It: Southeast Asia Becomes a Hunting Ground for Hà Nội’s Critics

In recent years, increasing numbers of Vietnamese political opponents, influencers, artists, and activists are fleeing the country, often choosing neighboring states. But countries that, until just a few years ago, were safe havens have increasingly become hostile territory. 

Thailand, Cambodia, and Laos have become the scene of disappearances, abductions, arrests, expulsions, and mounting pressure against dissidents who sought refuge across the border.

Transnational repression has drawn scrutiny from numerous international human rights organizations, which nevertheless remain constrained by the increasingly close security cooperation between Việt Nam and its regional neighbors. The result is a state accused of being able to target its opponents even outside its territorial jurisdiction.

The most recent, and still controversial, case concerns two activists of Vietnamese origin, Nguyễn Đức Thuận and Trần Hiệp, who are Norwegian and Australian citizens, respectively. 

According to an appeal issued by their families through Việt Tân on Sept. 24, the two arrived in Phnom Penh, Cambodia’s capital, on Sept. 15 on a flight from Bangkok to meet other Vietnamese activists.

Việt Tân, the Vietnam Reform Party, is a Vietnamese political organization with members in Việt Nam and abroad that advocates democracy and political reform through peaceful means. Nevertheless, the Vietnamese government has classified Việt Tân as a terrorist organization for years.

The last contact that Thuận and Hiệp made with relatives was on the morning of Sept. 18. The two were due to return to Bangkok the following day but did not board the scheduled flight. Their families then appealed to the United Nations over alleged enforced disappearances.

The case took a radically different turn on Sept. 28, when Việt Nam’s police announced that they had arrested Thuận; Trần Hiệp, whom the authorities identified as Hồ Phạm Hiệp Huy; and a third man, allegedly for illegally entering Việt Nam from the Cambodian border on the evening of Sept. 18.

According to the Vietnamese police, Thuận was carrying false identity documents and a Norwegian passport, while Huy had an Australian passport issued in the name of Trần Hiệp. The authorities also said the three had admitted to belonging to Việt Tân and had entered the country for activities Hà Nội describes as terrorist and subversive.

This new information does not erase the broader problem. Instead, it places the case within a sequence of incidents that has increasingly drawn the attention of international communities, including human rights organizations and foreign governments.

What Vietnamese Law Allows and What it Does Not

Two provisions give Hà Nội a domestic basis to prosecute such cases. Việt Nam’s amended Nationality Law, in force since July 1, 2025, says that in their dealings with Vietnamese authorities, Vietnamese citizens who also hold a foreign nationality are recognized only as Vietnamese, unless an international treaty provides otherwise. Article 6 of the Penal Code allows Vietnamese citizens to face prosecution at home for acts committed abroad that Vietnamese law defines as crimes.

Neither provision authorizes Vietnamese agents to arrest anyone on foreign soil. An arrest abroad would normally require the consent or cooperation of the state where the person is located or another lawful mechanism. In short, the law lets Hà Nội prosecute a Vietnamese national, including a dual national, but it does not override another country’s territorial sovereignty.

The distinction is important because the law can give Hà Nội a domestic basis to prosecute a Vietnamese national, including a dual national, while it does not by itself override another country’s territorial sovereignty. 

The record shows how this works once a person is inside Việt Nam. Australian citizen Châu Văn Khảm, a pro-democracy activist and Việt Tân member, was arrested in Hồ Chí Minh City in January 2019 after entering Việt Nam from Cambodia. He was sentenced to 12 years in prison on terrorism charges and was released and returned to Australia in July 2023. 

Phạm Minh Hoàng, a French-Vietnamese mathematics professor, was arrested in 2010 and imprisoned. He later had his Vietnamese citizenship revoked and was deported to France in 2017. In both cases, foreign citizenship did not stop prosecution.

There are fewer well-documented examples of Vietnamese dual nationals being physically arrested abroad. The best-established cases of alleged Vietnamese transnational repression instead involve Vietnamese nationals whose foreign citizenship status is unclear.

Bangkok, the Laboratory of Cross-Border Repression

In January 2019, journalist Trương Duy Nhất disappeared in Bangkok and later reappeared in a Hà Nội prison. In 2020, he was sentenced to 10 years on charges that rights groups called politically motivated.

The most emblematic case is that of citizen journalist and activist Đường Văn Thái. He fled to Thailand in 2019 and was recognized as a refugee by UNHCR. In April 2023, while awaiting resettlement to a third country, he disappeared near Bangkok. According to Human Rights Watch, unidentified men abducted him and forcibly took him back to Việt Nam. On Oct. 30, 2024, the Hà Nội People’s Court sentenced him to 12 years in prison under Article 117 of the Penal Code.

Rights organizations allege that Vietnamese agents were involved in both cases, and Việt Nam has rejected the kidnapping allegations. In Thái’s case, the government confirmed that it had him in custody while telling the United Nations that his investigation, prosecution, and trial complied with Vietnamese law and that the case was not one of kidnapping or forced return. Human Rights Watch and other organizations dispute this account.

Another significant case emerged in 2024. Y Quỳnh B’Đắp, an activist from the Ede minority, had received refugee status from UNHCR and lived in Thailand since 2018. Vietnamese authorities requested his extradition, accusing him of involvement in the June 2023 violence in Đắk Lắk Province. 

Amnesty International and other organizations warned that returning him could expose him to torture and other serious human rights violations. Thailand ultimately extradited Y Quỳnh to Việt Nam in November 2025, a few days after a court process.

In July 2026, Human Rights Watch and other organizations described a growing apparatus of Vietnamese transnational repression in Thailand. According to their joint statement, security and legal cooperation between Bangkok and Hà Nội, including negotiations over extradition and mutual legal assistance, is creating additional risks for Vietnamese dissidents, refugees, and journalists.

The situation is therefore not simply a matter of agents allegedly crossing a border to target an opponent. The phenomenon takes different forms: surveillance, intimidation, pressure on families, cooperation by local authorities, cancellation or revocation of documents, immigration detention, deportation, and, in the most extreme cases, abduction or enforced disappearance.

The Mekong, a Space Without Safe Havens

Geography helps explain the problem. Vietnam, Laos, Cambodia, and Thailand share borders, economic networks, and increasingly interconnected security structures. For a Vietnamese dissident, Bangkok may seem like a natural escape route: it is close to Việt Nam, hosts international organizations, and has a large refugee community. But that proximity can also become a vulnerability. 

Human Rights Watch documented 25 cases of transnational repression in Thailand between 2014 and 2023, including surveillance, violence, abductions, disappearances, and forced returns. The organization identified incidents linked not only to Việt Nam but also to other governments in the region. 

The issue therefore does not concern Hà Nội alone. The problem is a regional environment in which opponents can be pursued even after crossing a border and in which the line between domestic repression and international cooperation is increasingly blurred.

In Southeast Asia, Lao Dissidents Are Not Safe, Either

The disappearance of Khieo Lapchanh, 26, adds another piece to the regional picture, although there is no evidence linking it to Vietnam. 

Khieo, a Lao activist and content creator, had lived in Thailand since 2019. After he began publicly criticizing the Lao government, he reportedly received threats and decided to seek asylum. He disappeared on Sept. 15 in Samut Sakhon Province, shortly before an appointment with UNHCR. Radio Free Asia reported that the circumstances of his disappearance remained unclear. A Thai human rights organization described it as a possible case of transnational repression by Laos.

The Diplomat has linked the case to broader repressive cooperation among authoritarian governments in the Mekong region, recalling the cases of Od Sayavong, who disappeared in Bangkok in 2019, and Bounsuan Kitiyano, whose body was found in Thailand in 2023 with three gunshot wounds. In those cases, too, no one has definitively established responsibility.

There is, nevertheless, an important distinction: putting all these incidents in the same category and automatically attributing them to Vietnamese security services would be journalistically incorrect.

What emerges from the sources is a different reality. Southeast Asia is becoming an increasingly difficult environment for dissidents in exile, one in which different governments can exploit bilateral relations, police cooperation, and the vulnerabilities of refugees to extend pressure beyond their borders.

The Precedent that Outweighs Everything

Recent history shows that the fear is well-founded. In 2017, former Vietnamese official Trịnh Xuân Thanh was abducted in Berlin and taken to Việt Nam, a couple of years before the Trương Duy Nhất and Đường Văn Thái cases brought cross-border abductions back into the spotlight.

Human rights organizations now describe a situation in which Vietnamese exiles live in fear of surveillance, intimidation, or forced return. The new frontier is regional.

On Sept. 24, Nguyễn Đức Thuận and Trần Hiệp appeared to be two activists who had disappeared in Cambodia after traveling from Bangkok. Four days later, Hà Nội identified them as men arrested while illegally crossing into Việt Nam and accused them of terrorism.

Essential questions remain: What happened between Sept. 18 and the Vietnamese announcement? How did the two men come into the custody of Vietnamese authorities?

On Oct. 7, Cambodia’s Ministry of Interior denied any involvement in their disappearance in a Facebook statement. That raises further questions: Why issue a statement now, and why was nothing said about the two men’s disappearance until after Hà Nội’s announcement?

Southeast Asia is turning from a place of escape into a grey zone of transnational repression, where a dissident can cross a border and still carry his persecutor with him.

That is the question the region’s governments will have to confront: whether sovereignty still means a person is protected by the law once they cross a border, or whether security cooperation will leave those borders increasingly open to political persecution.