Estonia blames Russian special services for sabotage at Milrem Robotics building in Tallinn
Estonia's Security Police concluded that the 14–15 August fire at the Tallinn building of defense company Milrem Robotics — a supplier of unmanned ground vehicles to Ukraine — was an act of sabotage ordered by Russian special services. Three Latvian suspects have been detained and Estonia summoned Russia's chargé d'affaires on 29 September; the Kremlin rejected the accusations as unfounded.
Key points
- Fire broke out overnight on 14–15 August at the Milrem Robotics building on Betoni Street in Tallinn's Lasnamäe district; Estonian rescuers contained it quickly and no human lives were threatened.
- Estonia's Security Police concluded the arson was a deliberate, pre-planned act of sabotage commissioned by Russian security services; Prime Minister Kristen Michal said Estonia could state this 'with full confidence.'
- All three suspects are Latvian citizens, detained in Latvia on 17–18 August and handed over to Estonian authorities on 17–18 September; they are in custody and no longer pose a threat, according to Estonian authorities.
- On 29 September the Estonian Ministry of Foreign Affairs summoned Russia's chargé d'affaires Lenar Salimullin in response to the findings; Estonian Foreign Minister Margus Tsahkna wrote on X that the attack was ordered by Russian special services.
- Kremlin spokesman Dmitry Peskov called Estonia's accusations 'unfounded, ill-considered, absolutely not reflecting reality and containing no substantiation whatsoever' and said Russia would not take such statements seriously.
- Milrem Robotics produces THeMIS unmanned ground vehicles and supplies them to Ukraine in cooperation with EU countries; the company said the fire did not affect its supply chains.
- Estonia's Security Police assessed the sabotage as part of a broader Russian campaign in Europe aimed at intimidating allies and reducing support for Ukraine, and recommended that organizations supporting Ukraine and defense industry firms strengthen physical and cyber security measures.
Why it matters
The Milrem arson is the first formally attributed Russian state-sponsored sabotage on the territory of a NATO and EU member against a node in Ukraine's defense supply chain — Milrem supplies THeMIS unmanned ground vehicles to Ukraine in cooperation with EU countries. Estonia's attribution and the summoning of Russia's chargé d'affaires turn the case into a direct Estonia-Russia diplomatic confrontation, while the Security Police explicitly links it to a broader Russian campaign of around 200 sabotage and malign-activity incidents across Europe since February 2022 aimed at intimidating supporters of Ukraine and reducing Western military assistance.
What happened
In the night of 14–15 August, a fire broke out at the Milrem Robotics building on Betoni Street in Tallinn's Lasnamäe district; rescuers brought it under control quickly and no human lives were threatened, and Milrem said the incident did not affect its supply chains. Estonia's Security Police concluded that the arson was a deliberate, pre-planned act of sabotage commissioned by Russian security services, and on 29 September Prime Minister Kristen Michal said Estonia could state this with full confidence. Three Latvian citizens were detained in Latvia on 17–18 August and handed over to Estonian authorities on 17–18 September; they have been taken into custody and Estonian authorities say they no longer pose a threat, while a criminal investigation into the precise circumstances continues. The Security Police described the modus operandi as consistent with other acts of sabotage carried out in Europe on behalf of Russia and assessed the attack as directly attributable to the Russian Federation, part of a broader campaign aimed at intimidating allies and reducing support for Ukraine. On 29 September the Estonian Ministry of Foreign Affairs summoned Russia's chargé d'affaires Lenar Salimullin in response; Kremlin spokesman Dmitry Peskov rejected Estonia's accusations as unfounded and said Russia would not take them seriously.
How Ukrainian sources describe it
Ukrainian-language coverage, led by Ukrainian media and a Ukrainian agency, centers the story on the link between the attack and supplies to the Ukrainian Armed Forces, presenting it as Russian sabotage aimed at Ukraine's defense supply chain rather than a purely Estonian incident. A Ukrainian agency dispatch adds a Kyiv official reaction: Ukrainian Foreign Minister Andrii Sybiha condemned the sabotage and expressed full solidarity with Estonia. Ukrainian outlets give prominent play to Estonia's attribution to Russian special services and to the Kremlin's denial, framing the exchange as a direct Russia-versus-Estonia confrontation that extends to Ukraine, and highlight Estonia's stated commitment to maintaining 0.25% of GDP in support for Ukraine and allied statements that European support for Ukraine will continue.
How international sources describe it
English-language international coverage from US, British and Hong Kong outlets focuses on Estonia's attribution, the broader pattern of Russian sabotage across Europe, and allied reactions from NATO, the EU and France's Emmanuel Macron, situating the Milrem attack within a wider escalation rather than the impact on Ukrainian supplies specifically. International reports add context on the Latvian suspects — that they had been living in Russia and had taken part in previous attacks — and quote Estonian security chief Margo Palloson calling the arson Russia's first successful such attack in Estonia that year. International framing also gives more space to the Kremlin's dismissal of Estonia's claims and to Western intelligence reporting on Russian recruitment of local criminal networks for attacks on European weapons factories, emphasizing the political and security consequences for NATO and EU unity.
Where reporting differs
Sources differ on the detention of the suspects: most reporting says all three suspects were detained in Latvia and transferred to Estonia, but a smaller set of sources states only two were detained there and one elsewhere. There is also a split over Moscow's response — some sources report that as of 29 September Russia had not yet commented on Estonia's accusations, while others report that Kremlin spokesman Dmitry Peskov publicly rejected Estonia's claims as unfounded on the same day.
Background
Milrem Robotics produces THeMIS unmanned ground combat vehicles and supplies them to Ukraine in cooperation with EU countries; in June it opened a Dutch-funded production line in the Netherlands for an additional 100 units for the Ukrainian army. Western intelligence sources have reported that Russia has been recruiting members of local criminal groups to carry out a new wave of attacks on European defense industry sites, and similar suspected incidents in 2025 have been reported in Germany (a drone incident at Leipzig/Halle Airport), Bulgaria (a fire at a defense warehouse), Italy (an explosion at a munitions factory near Rome), Slovakia (an attempted arson on a Ukrainian-owned drone manufacturer in Prešov) and Poland (two suspicious fires). In Slovakia, the opposition has demanded explanations from Prime Minister Robert Fico over German media reports linking the Prešov attempt to Russian military intelligence. Estonian Defense Minister Martin Herem has said Estonia will continue to allocate 0.25% of its GDP to support Ukraine despite Russian threats and sabotage; searches in Latvia at addresses linked to the suspects uncovered data-storage equipment and items usable for arson.