Germany opens first Nord Stream sabotage trial as Ukrainian officer faces war crime charges

Indictment and opening of trial

The trial of 50-year-old Ukrainian army officer Serhii K. begins on 14 October 2026 before the Higher Regional Court in Hamburg. The proceedings are the first criminal trial concerning the destruction of the Nord Stream pipelines in September 2022. German federal prosecutors formally indicted K. in June 2026 on charges that include war crimes and causing explosive detonations. The 136-page indictment was prepared after four years of investigation by the Federal Criminal Police Office and the Federal Police. The Federal Prosecutor General classified the Baltic Sea pipelines as civilian infrastructure, which carries protected legal status prohibiting military attacks even during active armed conflicts. K., a father of four who currently works as an energy entrepreneur, previously served as a captain in the Ukrainian armed forces and belonged to a specialized sabotage unit.

Details of the Baltic Sea operation

According to the indictment, K. commanded an operational sabotage team of seven individuals tasked with disabling the undersea energy connection between Russia and Germany. The squad included Ukrainian combat engineer Vsevolod K., skipper Yurii T., and four civilian divers named as Valeria C., Vladimir Z., Oleksandr Y., and Levgen U. To execute the mission, the group chartered the German sailing yacht Andromeda in Rostock-Warnemünde for several weeks at a cost of nearly 12,000 euros. The operatives placed six explosive charges directly onto three of the four pipeline conduits of Nord Stream 1 and Nord Stream 2. Equipped with timed detonators, the explosives detonated on 26 September 2022, rupturing the lines that had delivered Russian natural gas across the Baltic Sea bed to Western Europe.

Physical evidence and vehicle tracking

Investigators assembled the case through forensic leads that began with incidental evidence collected along the northern German coastline. Surveillance files and tourist photographs from Baltic Sea ports, together with a speed camera recording on the island of Rügen, enabled detectives to identify the vehicles used to transport the group to Mecklenburg-Western Pomerania. Ukrainian vehicle registration plates allowed authorities to access border crossing logs recorded by Polish border guards during the team's transit. Although the operatives carried officially issued passports under assumed identities, an identity document scan allowed forensic analysts to match K. to his authentic profile.

Wiretapped calls and state sponsorship

Italian police arrested K. in August 2025 in the coastal resort city of Rimini while he was on vacation with his family. Following several weeks of extradition custody in Italy, authorities transferred him to German custody. During his detention in Italy, monitored telephone calls to his wife provided critical corroboration for investigators. K. told his wife that it was 'the right time' to release a public statement confirming that the pipeline bombings were 'an official military operation', arguing that he and his commander were not 'two crazy military men'. The indictment further concludes that the team acted on the instructions and with the formal approval of Ukrainian state institutions. Supporting evidence includes military-grade explosives unobtainable through commercial channels and Ukrainian Defence Ministry records assigning K. to a specialized unit focused on infrastructure destruction at the time of the attacks. A published commentary from Sueddeutsche Zeitung framed the central legal question facing the Hamburg court.

The key question is whether the destruction of the Nord Stream 1 and 2 pipelines was a crime committed by criminals or a justified act of war undertaken by representatives of a nation that fell victim to unlawful aggression.