German Court Denies Immunity for Nord Stream Suspect, Points to Ukrainian Involvement

Karlsruhe, Germany – In a significant development surrounding the 2022 Nord Stream pipeline explosions, a German federal court has rejected a Ukrainian national's claim of functional immunity and combatant privilege, ruling that the suspect, Serhii Kuznetsov, must remain in investigative custody. The court's decision marks a critical juncture in the ongoing probe, as it also indicated with a "high degree of probability" that the sabotage was carried out by Ukraine on the instructions of a foreign state, a finding with substantial geopolitical implications.

Court Rejects Immunity Claims, Cites Civilian Infrastructure

The Federal Court of Justice in Karlsruhe, Germany’s highest criminal court, made its ruling while addressing an appeal against Kuznetsov's arrest. Kuznetsov's defense team had argued that the alleged act, the sabotage of the Nord Stream gas pipelines, should be covered by "functional immunity" or "combatant privilege," framing it as an act of war by Ukrainian special forces against Russian infrastructure. However, the German court unequivocally rejected these arguments. It determined that the Nord Stream pipelines, designed for the transport of natural gas, constituted civilian infrastructure and therefore could not be considered legitimate military targets under international law. The court further emphasized that the destruction of such infrastructure endangered Germany's sovereignty. The ruling confirmed that Kuznetsov would remain in investigative custody, citing a high risk of flight. This decision sets a clear legal precedent for how similar cases of alleged sabotage on civilian infrastructure will be treated within German jurisdiction.

The Nord Stream Sabotage: A Lingering Mystery

The Nord Stream 1 and 2 pipelines, crucial conduits for Russian natural gas to Germany, were ruptured by a series of powerful underwater explosions on September 26, 2022. The incident, occurring seven months after Russia's full-scale invasion of Ukraine, immediately triggered widespread condemnation and multiple international investigations. The governments of the United States, the United Kingdom, and the European Union swiftly classified the events as deliberate acts of sabotage. While initial probes were launched by Denmark, Sweden, and Germany, the Danish and Swedish investigations concluded in February 2024 without assigning responsibility, with Sweden citing a lack of jurisdiction and Denmark finding no basis for a criminal case. Germany's investigation, however, has remained active and has now yielded this significant legal development. The explosions caused massive gas leaks in the Baltic Sea, putting the pipelines out of use and exacerbating Europe's energy crisis.

Serhii Kuznetsov: From Extradition to Denied Immunity

Serhii Kuznetsov, a Ukrainian national identified as a key suspect, was arrested in Italy in August 2025 following a European arrest warrant issued by German authorities. He was subsequently extradited to Germany in late November 2025. German prosecutors accuse Kuznetsov of anti-constitutional sabotage, causing an explosion, and damaging critical infrastructure, specifically three sections of the pipeline. The charges stem from allegations that explosives were planted from the yacht 'Andromeda' on September 26, 2022. Notably, Ukraine's Ministry of Defense, along with Colonel Roman Chervinskyi of the Special Operations Forces of Ukraine, later confirmed that Kuznetsov was indeed serving in the Ukrainian special forces at the time of the explosion. This confirmation underpinned the defense's argument for immunity, which the German court ultimately rejected. The ongoing investigation suggests Kuznetsov was the alleged coordinator of the sabotage operation.

Geopolitical Ramifications and European Divisions

The German court's explicit, albeit probabilistic, determination of Ukrainian responsibility for the Nord Stream sabotage marks a delicate moment in international relations, particularly for European unity. This is reportedly the first instance of a German court publicly attributing the attack to Ukraine. The incident itself has always been politically charged, with Russia and Western nations exchanging accusations. The court's ruling could intensify diplomatic tensions between Germany and Ukraine, even as Germany remains a significant supporter of Ukraine in its conflict with Russia. The case also highlights existing divisions within Europe regarding the handling of suspects linked to the Nord Stream incident. In October 2025, a Polish court rejected Germany's request to extradite another Ukrainian suspect, Volodymyr Z, involved in the Nord Stream sabotage, ordering his immediate release. This decision, according to Polish Prime Minister Donald Tusk, was based on the premise that such an extradition was not in the interest of "decency and justice," with Poland historically opposing the Nord Stream project. These differing stances underscore the complexity of balancing legal principles, national interests, and geopolitical alliances in the wake of such a significant act of sabotage.

The German Federal Court of Justice's decision to deny immunity to Serhii Kuznetsov and its finding regarding Ukraine's probable involvement significantly advances the legal and political dimensions of the Nord Stream sabotage. By rejecting claims of combatant privilege and classifying the pipelines as civilian infrastructure, the court has emphasized the criminal nature of the act under German law. While the investigation remains ongoing, this ruling sets a crucial precedent and adds another layer of complexity to the already intricate web of international relations surrounding the 2022 explosions. The full implications for diplomatic ties and energy security in Europe are yet to unfold as the case proceeds to trial.