A Global Mystery: What's Known about Nord Stream Explosions

Pipes at the landfall facilities of the Nord Stream 1 gas pipeline are pictured in Lubmin, Germany, March 8, 2022. (Reuters)
Pipes at the landfall facilities of the Nord Stream 1 gas pipeline are pictured in Lubmin, Germany, March 8, 2022. (Reuters)
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A Global Mystery: What's Known about Nord Stream Explosions

Pipes at the landfall facilities of the Nord Stream 1 gas pipeline are pictured in Lubmin, Germany, March 8, 2022. (Reuters)
Pipes at the landfall facilities of the Nord Stream 1 gas pipeline are pictured in Lubmin, Germany, March 8, 2022. (Reuters)

It’s a major international mystery with global consequences: Who was behind the explosions that damaged the Nord Stream gas pipelines last year in the Baltic Sea?

The answer has broad implications for European energy security but could also threaten Western unity over backing Ukraine in defending itself from Russia’s invasion. Or, it might shatter Russian and Chinese attempts to fix the blame on a hypocritical West, said The Associated Press.

Yet, nearly six months after the sabotage on the Russia-to-Germany pipelines, there is no accepted explanation. And a series of unconfirmed reports variously accusing Russia, the United States and Ukraine are filling an information vacuum as investigations into the blasts continue.

A look at the pipelines and what’s known about the explosions.

WHAT ARE THE NORD STREAM PIPELINES?

The pipelines, known as Nord Stream 1 and Nord Stream 2, are majority-owned by Russia's state-run energy giant Gazprom and used to transport natural gas from Russia to Europe under the Baltic to their termini in Germany.

Nord Stream 1 was completed and came online in 2011. Nord Stream 2 was not finished until the fall of 2021 but never became operational due to the launch of Russia's invasion of Ukraine in February, 2022.

WHY ARE THEY CONTROVERSIAL?

Both pipelines bypass existing routes that go through Ukraine, meaning not only that Ukraine loses income from transit fees but is unable to directly use the gas they carry.

Of perhaps greater concern to the West, the pipelines were seen as a move by Russia to gain further, if not almost complete, control over Europe's energy supplies. Many in the West fear that Russia will use energy as a political weapon against European countries as it has done in the past with former Soviet states.

Despite those concerns and over the objections of the Obama, Trump and Biden administrations, the German government under former Chancellor Angela Merkel moved ahead with the construction of the Nord Stream 2 project. The Biden administration waived sanctions against German entities involved in Nord Stream 2 after securing a pledge from Germany that it would allow backflows of gas into Ukraine and would act to shut the pipeline down should Russia try to use it to force political concessions.

After Russia's Feb. 24, 2022, invasion of Ukraine, Germany withdrew permission for Nord Stream 2, which had not yet come online.

WHAT HAPPENED TO THE PIPELINES?

First, Gazprom halted gas flows through Nord Stream 1 on Sept. 2, 2022, citing issues related to European sanctions imposed against Russia over the war in Ukraine.

Three weeks later, both Nord Stream 1 and Nord Stream 2 were hit by explosions that rendered them inoperable and caused significant leaks of gas that was idle in the pipelines. Some have said the blasts caused the worst release of methane in history, although the full extent of the environmental damage remains unclear.

The depth of the pipeline and the complexity of using underwater explosives lent credence to the idea that only a state actor with the expertise to handle such an operation could be responsible. But no one claimed responsibility.

In the immediate aftermath of the explosions, U.S. officials suggested Russia may have been to blame while Russia accused the United States and Britain of being behind them. Investigations by European nations, including Denmark, through whose waters the pipeline travels, and Germany have yet to yield conclusive results.

WHAT THEORIES HAVE BEEN REPORTED?

After months of few developments in the probes, American investigative journalist Seymour Hersch, known for past exposes of U.S. government malfeasance, self-published a lengthy report in February alleging that President Joe Biden had ordered the sabotage, which Hersch said was carried out by the CIA with Norwegian assistance.

That report, based on a single, unidentified source, has been flatly denied by the White House, the CIA and the State Department, and no other news organization has been able to corroborate it. Russia, followed by China, however, leaped on Hersch's reporting, saying it was grounds for a new and impartial investigation conducted by the United Nations.

On Tuesday, though, The New York Times, The Washington Post and German media published stories citing U.S. and other officials as saying there was evidence Ukraine, or at least Ukrainians, may have been responsible. The Ukrainian government has denied involvement.

Germany's Die Zeit newspaper and German public broadcasters ARD and SWR reported that investigators believed that five men and a woman used a yacht hired by a Ukrainian-owned company in Poland to carry out the attack. German federal prosecutors confirmed that a boat was searched in January but have not confirmed the reported findings.

WHAT ARE THE CONSEQUENCES FOR THOSE FOUND RESPONSIBLE?

The implications of a determination that Ukraine was behind the explosions are not entirely clear. It's unlikely it would result in an immediate loss of Western support for Ukraine in the war with Russia, but it might dampen enthusiasm for future assistance if it was found that Ukraine or its agents carried out such an operation in European waters.

A determination that the United States or a proxy was responsible would give Russia and China additional leverage to go after the U.S. and its allies as hypocrites in their demands for the rule of the law, sovereignty and territorial integrity to be respected.

A finding that Russia was behind the explosions would lend weight to Western claims that Moscow is in flagrant breach of international law and willing to use energy as a weapon against Europe.

There is no indication of when the European investigations will be complete — and it seems improbable, given the animosity and mistrust surrounding the Ukraine conflict, that its findings will be universally accepted.



Türkiye Presses PKK to Disarm ‘Immediately’

An Iraqi Kurdish woman waves a flag bearing the portrait of the founder of the Kurdistan Workers’ Party (PKK) Abdullah Ocalan as people gather at Freedom Park to listen to an audio message by the jailed leader in Sulaimaniyah, in Iraq's autonomous Kurdistan region on February 27, 2025. (AFP)
An Iraqi Kurdish woman waves a flag bearing the portrait of the founder of the Kurdistan Workers’ Party (PKK) Abdullah Ocalan as people gather at Freedom Park to listen to an audio message by the jailed leader in Sulaimaniyah, in Iraq's autonomous Kurdistan region on February 27, 2025. (AFP)
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Türkiye Presses PKK to Disarm ‘Immediately’

An Iraqi Kurdish woman waves a flag bearing the portrait of the founder of the Kurdistan Workers’ Party (PKK) Abdullah Ocalan as people gather at Freedom Park to listen to an audio message by the jailed leader in Sulaimaniyah, in Iraq's autonomous Kurdistan region on February 27, 2025. (AFP)
An Iraqi Kurdish woman waves a flag bearing the portrait of the founder of the Kurdistan Workers’ Party (PKK) Abdullah Ocalan as people gather at Freedom Park to listen to an audio message by the jailed leader in Sulaimaniyah, in Iraq's autonomous Kurdistan region on February 27, 2025. (AFP)

Türkiye on Thursday insisted the PKK and all groups allied with it must disarm and disband "immediately", a week after a historic call by the Kurdish militant group's jailed founder.

"The PKK and all groups affiliated with it must end all terrorist activities, dissolve and immediately and unconditionally lay down their weapons," a Turkish defense ministry source said.

The remarks made clear the demand referred to all manifestations of Abdullah Ocalan's Kurdistan Workers' Party (PKK), which has led a four-decade insurgency against the Turkish state, costing tens of thousands of lives.

Although the insurgency targeted Türkiye, the PKK's leadership is based in the mountains of northern Iraq and its fighters are also part of the Kurdish-led Syrian Democratic Forces (SDF), a key force in northeastern Syria.

Last week, Ocalan made a historic call urging the PKK to dissolve and his fighters to disarm, with the group on Saturday accepting his call and declaring a ceasefire.

The same day, President Recep Tayyip Erdogan warned that if the promises were not kept, Turkish forces would continue their anti-PKK operations.

"If the promises given are not kept and an attempt is made to delay... or deceive... we will continue our ongoing operations... until we eliminate the last terrorist," he said.

- Resonance in Syria, Iraq -

Since 2016, Türkiye has carried out three major military operations in northern Syria targeting PKK militants, which it sees as a strategic threat along its southern border.

Ankara has made clear it wants to see all PKK fighters disarmed wherever they are -- notably those in the US-backed SDF, which it sees as part of the PKK.

The SDF -- the bulk of which is made up of the Kurdish YPG -- spearheaded the fight that ousted ISIS extremists from Syria in 2019, and is seen by much of the West as crucial to preventing an extremist resurgence.

Last week, SDF leader Mazloum Abdi welcomed Ocalan's call for the PKK to lay down its weapons but said it "does not concern our forces" in northeastern Syria.

But Türkiye disagrees.

Since the toppling of Syria's Bashar al-Assad in December, Ankara has threatened military action unless YPG militants are expelled, deeming them to be a regional security problem.

"Our fundamental approach is that all terrorist organizations should disarm and be dissolved in Iraq and Syria, whether they are called the PKK, the YPG or the SDF," Omer Celik, spokesman for Erdogan's ruling AKP, said on Monday.

Ocalan's call also affects Iraq, with the PKK leadership holed up in the mountainous north where Turkish forces have staged multiple air strikes in recent years.

Turkish forces have also established numerous bases there, souring Ankara's relationship with Baghdad.

"We don't want either the PKK or the Turkish army on our land... Iraq wants everyone to withdraw," Iraq's national security adviser Qassem al-Araji told AFP.

"Turkish forces are (in Iraq) because of the PKK's presence," he said, while pointing out that Türkiye had "said more than once that it has no territorial ambitions in Iraq".