Beneath the Moss: Latvia Confronts a Persistent Hybrid Threat at the Belarusian Border

Main Facts: The New Frontier of Tunnel Warfare

In a chilling development that underscores the escalating volatility at the European Union’s eastern flank, Latvian border authorities have discovered a sophisticated underground tunnel used to facilitate the clandestine entry of migrants from Belarus. The passage, located just 20 meters from the demarcated border line, was expertly concealed with natural moss to evade aerial and ground surveillance.

This discovery represents the second such breach in recent weeks, signaling a shift in tactics by those attempting to bypass Latvia’s fortified, 173-kilometre-long border fence. The most recent incident resulted in the interception of 28 individuals, while a similar tunnel found on August 10 had already been utilized by 15 migrants to slip into Latvian territory. These are not merely isolated incidents of irregular migration; they are structural challenges that suggest the involvement of organized networks capable of engineering projects within the Belarusian border zone—an area under the strict control of the Minsk regime.

Chronology: A Three-Year Escalation

To understand the current crisis, one must look back to the summer of 2021, a pivotal turning point in the security architecture of the Baltic region.

  • Mid-2021: Following the European Union’s imposition of sanctions against the regime of Aliaksandr Lukashenka, the Belarusian leader threatened to "open the floodgates," facilitating the movement of migrants and illicit substances into the EU.
  • 2021–2023: Initial waves of irregular migration tested the readiness of Latvia, Lithuania, and Poland. The crisis evolved from spontaneous arrivals into a systematic, state-sponsored operation.
  • 2025: Latvia moved to solidify its physical defenses, completing the construction of a permanent, high-security fence along the entirety of its 173-kilometre border with Belarus.
  • July 2026: The Latvian Prosecutor General’s Office officially opened a criminal investigation into Belarusian border officials, characterizing their actions as part of a criminal enterprise rather than legitimate border management.
  • August 10, 2026: Border guards discover the first major underground tunnel.
  • Mid-August 2026: Latvia launches "Operation Vilkatis" (Werewolf), a comprehensive security mobilization aimed at countering the "instrumentalized" migration flow.
  • Present Day: As Latvia approaches its October 3 parliamentary elections, the intensity of border incursions remains at an all-time high, with daily attempts frequently exceeding 100 individuals.

Supporting Data: By the Numbers

The statistical reality of the border pressure is stark. In the first eight months of 2026 alone, Latvia has recorded nearly 10,000 attempts at illegal entry. To put this in perspective, the total number of attempts for the entirety of 2025 was 12,000. This trajectory suggests that by year-end, the 2026 figures will significantly eclipse those of the previous year.

The demographics of the migrants reveal the global reach of this transit network. Chief of the State Border Guard Guntis Pujāts has confirmed that the flow includes individuals from Iran, Iraq, Eritrea, Afghanistan, Syria, Cameroon, and Cuba.

"We have no border with these countries," Pujāts noted. "This is not a traditional, organic migration flow. It is an artificial pipeline."

The "secondary migration" effect is also becoming increasingly apparent. Data indicates that neighboring Lithuania has experienced a fourfold increase in migrant arrivals originating from Latvian territory. This confirms that for the vast majority of those crossing into Latvia, the Baltic state is merely a transit point, with their final intended destinations lying in the more affluent countries of Western Europe—Germany, Belgium, and the Netherlands.

Official Responses and the "Hybrid Attack"

The official stance from Riga is clear: Latvia is not dealing with a humanitarian migration crisis in the traditional sense, but with a "hybrid attack" orchestrated by Minsk.

The Latvian Perspective

Guntis Pujāts has been vocal about the frustration felt by his officers on the ground. He argues that the wider European Union has yet to fully grasp the existential nature of the threat. "Latvia is not a target country. We are guarding the borders for Germany, for Belgium, for the Netherlands," Pujāts told Euronews. "There is not enough understanding about the current situation, or the fact that we are protecting the whole of Europe."

President Edgars Rinkēvičs, however, suggests that the tide of opinion is shifting. He maintains that European capitals are increasingly recognizing that the Baltic-Belarusian border is not merely a regional boundary, but the external perimeter of the entire EU.

The Legal Counter-Offensive

The move by the Latvian Prosecutor General’s Office to pursue criminal charges against Belarusian officials is a significant escalation. The formal complaint alleges that Belarusian border authorities are operating as a criminal organization, providing logistics—including state-owned vehicles and housing—to facilitate the transport of migrants to the border. This move is designed to force an international legal reckoning with the Lukashenka regime’s involvement in human smuggling.

Implications: Strategic Vulnerability and Future Challenges

The situation has forced Latvia into a complex balancing act between maintaining its international human rights obligations and protecting its national security.

Technological and Human Resource Gaps

Despite the completion of the physical fence, the border remains porous due to a persistent shortage of personnel. Latvia is currently short by approximately 200 border guards. While technological upgrades—such as sensors and surveillance cameras—are expected to be finalized by the end of this year, Chief Pujāts acknowledges that technology alone cannot replace the human element.

"One is technology, the other is human resources," Pujāts stated. "We are working to improve our capacity, to recruit more personnel, and I hope in a couple of years, the situation will be changed in a positive way."

Regional Solidarity

Recognizing that the threat is not limited to Latvia, regional cooperation has intensified. Bilateral agreements have seen personnel from Estonia, Lithuania, and Finland deployed to the Latvian border to bolster its defenses. A similar agreement with Poland is expected to be formalized shortly, creating a "solidarity corridor" of security that aims to present a united front against the Belarusian pressure.

The Political Calculus

With the October 3 parliamentary elections looming, the migration crisis has become a central pillar of the domestic political discourse. The incumbent government is under pressure to prove that it can maintain sovereignty while navigating the complex geopolitical maneuvers of its neighbor.

The strategy of "instrumentalized migration"—the use of human beings as geopolitical pawns—has fundamentally changed how border management is viewed in the Baltics. It has transitioned from a routine administrative task to a front-line defense in a hybrid conflict. As the winter months approach, the combination of difficult terrain, the discovery of subterranean tunnels, and the persistence of the Lukashenka regime suggests that the border will remain the most significant flashpoint in the region for the foreseeable future.

The discovery of the tunnels is a reminder that in this hybrid war, the battlefield is not only in the air or in cyberspace; it is also beneath the soil, where every patch of moss and every inch of earth is part of a larger struggle for the integrity of Europe’s borders. Whether the current measures, including the "Vilkatis" operation and increased regional collaboration, will suffice to deter these efforts remains the defining question for the Baltic states. For now, the guards remain vigilant, aware that they are the primary barrier between the instability of the East and the security of the West.