Ukraine has opened its own criminal investigation into the 2022 destruction of the Nord Stream gas pipelines, months after Germany charged a Ukrainian over the blasts, Suspilne reported. Prosecutors in Kyiv registered the case on war-crimes grounds and say they will test whether Russia staged the sabotage to discredit Ukraine. Serhii Kuznietsov is due to stand trial in Germany in October.

Kyiv will test a Russian false-flag version

Ukraine's Security Service, under the Prosecutor General's Office, opened proceedings on 9 July under the article on violations of the laws and customs of war. Kuznietsov's Ukrainian lawyer, Mykola Katerynchuk, told Suspilne about the case.

The Prosecutor General's Office confirmed it is supervising a probe into the "possible commission in September 2022, amid the international armed conflict between Russia and Ukraine, by citizens of Ukraine, of actions connected to the undermining" of both pipelines in the Baltic Sea. It said the case was registered after the "independent discovery in the media" that Germany had charged a Ukrainian citizen.

Given Russia's use of hybrid methods, investigators will also examine whether Russians organized the explosions as a "false flag" operation, using Ukrainian citizens or imitating their participation to discredit Ukraine.

The office said it used the laws-and-customs-of-war charge because it matches the qualification chosen by Germany's Federal Prosecutor's Office.

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The case against Serhii Kuznietsov

The pipelines exploded on 26 September 2022. On 8 August 2025, Germany's Federal Court of Justice issued an arrest warrant for Kuznietsov, alleging he led a group of six who mined the pipelines and detonated them remotely.

Italian police arrested him on 21 August 2025, and Italy's Supreme Court later confirmed his extradition to Germany. A Polish court, by contrast, refused a German request for another Ukrainian suspect, Volodymyr Zhuravlov.

On 2 July 2026, Germany's Federal Prosecutor's Office published its charges — an attack on civilian objects, causing an explosion, and destroying structures. Kuznietsov denies guilt.

Ukraine condemns Russia for jailing people on fabricated terrorism charges. Yet, its own security services keep sending Kremlin opponents back to Moscow, human rights defender Borys Zakharov said in an interview with Ukrainian outlet Texty.org.ua.

The handovers are not a relic of a friendlier past. They slowed after Russia's full-scale invasion in 2022, then resumed; the transfers now run through third countries, Zakharov says, and at least one has ridden the prisoner swaps that bring Ukraine's captured soldiers home. Ukraine is returning the exact people who bet their lives on it; at the moment, it presents itself to the world as the rule-of-law side of this war.

A double standard, few in Kyiv discuss

Zakharov directs the charitable foundation Human and Law, which defends people fleeing authoritarian states. Russia prosecutes captured Ukrainians on invented terrorism charges, and Kyiv rightly calls it a sham. But when Chechens, Ingush, and other North Caucasians ask Ukraine for protection, officials sometimes brand them criminals and send them back—men who often fled two brutal Chechen wars and the crackdowns after them, and some of whom later fought Russia in volunteer units.

"We say: yes, they are criminals. We hand them over to Russia to die," Zakharov said.

International law forbids this. The principle of non-refoulement bars any state from returning a person to a country where they face death, persecution, or torture. Zakharov says Ukraine's migration authorities often skip that risk assessment entirely.

The cases the West never heard about

Take Timur Tumgoev, an Ingush volunteer fighter whom Ukraine extradited in September 2018. A Russian court sentenced him to 18 years on terrorism charges, his defenders call fabricated. Zakharov says he was tortured so badly that he can barely move.

Others escaped by luck. Ukraine nearly removed Zelimkhan Belkharoev, a wrestler, in 2016 despite an emergency order from the European Court of Human Rights, Zakharov says; a deputy justice minister intervened in time. Adam Osmayev, a Chechen battalion commander whose wife Amina Okueva was killed in a 2017 assassination attempt, was saved the same way years earlier.

Why did it not stop after 2022

The war did not end the handovers—it rerouted them. Direct extraditions paused; the transfers now run through Belarus, Moldova, and Turkiye, Zakharov says.

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Zakharov says Zaur Shogentsukov, a Kabardian who crossed from Belarus to join Ukraine's forces, allegedly failed a polygraph test with the Security Service of Ukraine (SBU) and was pushed back into Belarus under a readmission deal. His tortured body later came back to his family in Nalchik, he says.

Alexey Gerasimov, a student from Russia's Chuvash region who reportedly backed his homeland's independence, slipped into Ukraine in 2024 to join the Sibir Battalion, a unit of Russian volunteers. He ended up in one of the large prisoner exchanges that followed the May 2025 Istanbul talks, and Ukraine delivered him to Russia, where he now faces terrorism charges—the independent Russian outlet Verstka reported in an investigation carried by Novaya Gazeta Europe.

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The most recent case is still unfolding. Aslan Khakimov, a Russian engineer who fled the Federal Security Service (FSB) in 2015 and spent years building robots for Ukraine's army, has sat in a migration facility since April 2026, accused of financing terrorism and facing deportation.

The most recent case is still unfolding. Aslan Khakimov, a Russian engineer who fled the Federal Security Service (FSB) in 2015 and spent years building ground robotic systems for Ukraine's army, entered on forged documents and lived for a decade under a false identity, Ruslan Puptaiev—the illegal stay Ukraine's migration service cites for the deportation order it issued in April 2026. Russia has separately convicted him in absentia of terrorism, a charge his defenders call fabricated. His supporters argue that returning him would be a death sentence.

Ukraine's services frame these as wartime security decisions, and infiltration is a genuine risk. But non-refoulement admits no wartime exception: even a proven spy is not a country's to send to his death.

The money question

Zakharov offers a blunter explanation for at least some cases: money. In the Tumgoev handover, he says, the man's family was quietly invited to outbid Moscow—to top the sum Russian handlers allegedly pay SBU officers for each person delivered.

"Totalitarian regimes spare no money persecuting their opponents," he said.

Ukraine's security service has not confirmed his account, and the allegation rests solely on his testimony.

Russia, for its part, has already shown its games in these exchanges, at times swapping in people with no link to the war. As Kyiv negotiates ever-larger exchanges to free its own soldiers, the same machinery can carry the Russians and Caucasians who fought for Ukraine the other way — a propaganda gift to Moscow and a warning to the next would-be defector that Ukraine's protection may not hold. For a state that anchors its whole cause in the rule of law, that is a debt that keeps compounding.