A former Ukrainian army officer is standing trial in Hamburg, Germany, for his alleged role in the 2022 underwater explosions that damaged the Nord Stream gas pipelines.

A former Ukrainian army officer, identified in court as Serhii K., is facing trial at the Hanseatic Higher Regional Court in Hamburg starting this week. He is accused of orchestrating the 2022 underwater explosions that damaged the Nord Stream 1 and 2 gas pipelines in the Baltic Sea. The defendant, who was arrested in Italy in August 2025 and subsequently extradited, faces charges including causing an explosion, damaging property, and acting as an accomplice to war crimes.

Details of the Alleged Attack

Prosecutors allege that the suspect organized the detonation of at least four bombs, each weighing between 14 and 27 kilograms, at depths of 70 to 80 meters near the Danish island of Bornholm. The operation reportedly utilized a yacht chartered from a German company using forged identification documents. The explosions, which occurred on September 26, 2022, ruptured the Nord Stream 1 pipeline and damaged the Nord Stream 2 infrastructure.

Political Context and Denials

The case has drawn significant political attention due to Germany's ongoing support for Ukraine in its conflict with Russia. While some political factions in Germany have used the incident to question continued aid to Kyiv, Ukrainian President Volodymyr Zelenskyy has repeatedly denied any official Ukrainian involvement in the sabotage. The trial is considered one of the most politically charged cases of wartime sabotage in Europe since the Second World War.