Why did Russia invade Ukraine, and Who Blew Up Nord Stream?

Russia’s President Vladimir Putin has given varying public explanations for why he launched the invasion. But little has turned out the way he expected.



Here are the reasons Putin gave, how they match with reality, and the other likely reasons why Russia sent its armed forces into an independent, sovereign nation.

A Ukrainian serviceman in uniform stands on a road lined with destroyed Russian tanks and other debris
A Ukrainian serviceman stands amid destroyed Russian tanks in Bucha, on the outskirts of Kyiv, Ukraine, April 6, 2022.AP Photo/Felipe Dana, File

Putin sees Ukraine as Russian

Ukraine was part of the Soviet Union, before declaring itself an independent country, cementing the move in a referendum days before the USSR collapsed in December 1991.

The country has maintained its independence ever since. But Putin still refers to Ukraine as Russian, and denies it’s a nation in its own right. He told then-US President George W. Bush in 2008 that Ukraine wasn’t even a country.

Stephen Hall, a Russian politics expert at the University of Bath in the UK, said many Russians still hold this view, and that “it isn’t just the Kremlin.”

Hall added that Russia needs to claim Ukraine in order to back up its argument to being a great power that has existed for millennia.

Without it “Russia can’t claim a thousand years of history because Kyiv was already in existence 1,200 years ago, when Moscow was a forest,” he said.

Four coffins covered in red sheets beside open graves, with lines of grave markings behind them
A priest takes part in the funeral of 38 pro-Russian soldiers, at a cemetery in Luhansk, Russian-controlled Ukraine, November 11, 2022.REUTERS/Alexander Ermochenko

Recreating a Slavic Brotherhood

Fifteen of today’s sovereign nations were once part of the Soviet Union, and experts say Russia cares more about Ukraine than nearby Belarus, as well as other former USSR countries in central Asia.

Belarus is already essentially a Russian puppet state, making a military invasion of it almost pointless, whereas Ukraine has increasingly aligned itself with the West in recent years.

Belarus is also much smaller than Ukraine and Russia is less interested in claiming its history, Professor Brian Taylor, a Russian politics expert at Syracuse University, noted.

Thomas Graham, cofounder of Yale University’s Russian, East European, and Eurasian studies program, said Ukraine has been important to the “Russian political imagination for decades, if not centuries.”

A former US presidential advisor on Russia, Graham also said that Ukraine’s territory aided Russia’s economic strength throughout its history, including supplying much of the Russian Empire’s coal, steel, and iron from the 19th century.

He added that without Ukraine’s Donbas region, “Russia would not have been a great power at the end of the 19th and into the early years of the 20th century.”

A Ukrainian police officer takes cover in front of a burning building
A Ukrainian police officer takes cover in front of a burning building that was hit in a Russian airstrike in Avdiivka, Ukraine, March 17, 2023.AP Photo/Evgeniy Maloletka

Putin blamed the West

Taylor said the invasion of Ukraine reflects Putin’s “grievances that have been brewing for a long time.”

For Putin, “Russia has a right to rule Ukraine. Russians and Ukrainians are one nation and one people. They were illegitimately and artificially separated when the Soviet Union collapsed, and he blames the West for trying to pull Ukraine out of Russia’s natural friendship,” Taylor said.

At the start of the invasion, Putin blamed NATO’s expansion into eastern Europe for forcing his hand, echoing a criticism he has made for years.

Hall said the idea that NATO is threatening Russia by expanding towards its borders is “very much part of the Russian propaganda narrative.”

He also pointed out that NATO doesn’t simply expand, but that countries apply to join, usually motivated by a perceived outside threat. In eastern Europe, that threat often comes from Russia.

Lithuania’s prime minister, for example, told Insider in February that her country joined NATO “because of Putin.”

But Putin has reversed that excuse and was playing a “blame game,” she said.

Russian President Vladimir Putin, wearing eye and ear protection and a black coat, hugs a soldier outdoors
Russian President Vladimir Putin embraces a soldier as he visits a military training center for mobilized reservists in Ryazan, Russia, October 20, 2022.Russian Defense Ministry Press Service via AP

A NATO excuse

Putin has used the NATO line to try to convince an international audience who might already have strong misgivings about the Western military alliance, Hall said.

And if Russia can engage with even a minority who feel this way “it creates an electoral voice for Russia to use to try and stop Western engagement,” he said.

Hall added that even if NATO was expanding “that doesn’t justify what Russia has done in Ukraine.”

Ukraine’s own ties with NATO deepened after 2014, when pro-Russian forces invaded eastern Ukraine, starting a conflict that continued until the 2022 invasion.

But Taylor said he doesn’t see a “coherent explanation” for how NATO’s alleged expansion could lead to this war.

Before Finland joined NATO earlier this year, no new countries had joined the alliance since 2004, and even then it was “pretty tiny countries” — Estonia, Latvia, and Lithuania — Taylor noted.

He also said that NATO didn’t put additional troops in the region “so it wasn’t like the addition of those countries created this military force on Russia’s doorstep.”

In fact, Taylor said that the US was cutting back on the size of its armed forces in Europe until pro-Russian forces occupied parts of Ukraine in 2014.

Zelenskyy in coat, armored vehicle and Ukrainian and Polish flags in the distance behind him
Ukrainian President Volodymyr Zelenskyy.Omar Marques/Getty Images

It’s all about the ‘Nazis’

One of Putin’s most frequently claims is that “Nazis” run Ukraine, so Russia must intervene to stop them.

This is despite Ukraine having a Jewish president in Volodymyr Zelenskyy, and there being no evidence the country’s leadership is controlled by Nazis.

Taylor said there are some who identify with Nazi ideology in Ukraine, but “it’s a small group. They’ve never been politically powerful or important, but they are there.”

“But there are also Nazis in Russian politics, there are Nazis in American politics,” he said.

The experts said the key to understanding Russia’s repeated claim of Ukrainian Nazis is that they use the term differently to the West.

“Russia has a different perception of what Nazism is and what fascism is in general to how we perceive it in the West,” Hall said.

“Nazism is Russia-phobia to them. So the Ukrainians are Nazis because they’re anti-Russian.”

Putin also promotes this Nazi idea to win support in the West, where people have always been “susceptible” to the argument that Ukraine has a Nazi problem, Hall said.

He said Putin’s strategy is partly “throw things at the wall and see what sticks.”

But really, Putin just wants a legacy

According to Graham, there is no evidence that Putin was under public pressure to invade Ukraine, which suggests at least some of his reasoning was personal.

All three experts said Putin’s desire to be revered in history books likely motivated him to attack.

Hall said Putin’s anxiety is around “am I going to be a footnote in Russian history or are they going to write books about me like they do Peter the Great, Catherine the Great, Stalin.”

Taylor agrees, saying that Putin sees himself as “a great historic Russian leader restoring Russian lands, and he was thinking about his legacy as he turned 70.”

“What have the great Czars done? They’ve expanded Russian territory,” Graham said.

Russian servicemen stand ready to shoot in front of armored vehicles in the snow
In this handout photo taken from video released by the Russian Defense Ministry Press Service in December 2022, Russian soldiers take part in drills at an unspecified location in Belarus.Russian Defense Ministry Press Service via AP

Even so, why now?

Even with all of the above, why the invasion happened when it did is an intriguing question. Experts pointed to multiple reasons why Russia invaded in February 2022.

One was the arrival of Zelenskyy, who came to power in 2019 after a career as a comedian and actor. Putin believed that in Zelenskyy “he had someone he could manipulate in Ukraine,” Hall said.

Taylor said that during the 2019 election, Zelenskyy was also seen “as the one who was potentially more pro-Russian. He’s from a Russian speaking region. His first language was Russian.”

But then, in 2021, Ukraine charged one of Putin’s closest allies with treason.

Taylor said the arrest of Viktor Medvedchuk made Putin realize “his goal of bringing Ukraine under Russian control peacefully has failed. And so the only option left is the military one.”

He also pointed to geopolitical reasons why Putin didn’t launch a full invasion sooner.

Part of the reason was US President Donald Trump getting into power. Trump was “very friendly towards Putin, at least in his public language,” said Taylor, and also publicly criticized NATO. This meant Putin could wait to see if the alliance would ” kind of shatter from within.”

Taylor also credits the COVID-19 pandemic, saying Putin “was much more isolated for that two-year period than he normally would have been.”

Graham said Putin’s recent tendency towards “megalomania” had been “exacerbated” by him being “in extreme isolation.”

Russian president Vladimir Putin raises a finger in front of a microphone while seated
Russian President Vladimir Putin meets with war correspondents in Moscow, June 13, 2023.GAVRIIL GRIGOROV/SPUTNIK/AFP via Getty Images

Putin saw his chance 

Graham believes that Putin also likely saw some opportunities from the state of global politics in 2022.

He noted Zelenskyy had a low approval rating before the invasion, and some squabbling among Ukraine’s elite meant Putin thought they likely wouldn’t unite against him.

The US’ “chaotic” withdrawal from Afghanistan, new leaders of Germany and the UK, and pressure for France’s president all meant Putin thought there was no “capable Western leadership” to oppose Russian aggression, he said.

Based on all this, Putin thought that he could just invade Ukraine and take Kyiv in a matter of days.

But little has turned out the way he expected.

“Almost all of Putin’s assumptions turned out to be wrong,” Graham said.


Russia’s motives for destroying the pipeline are weak. The conspiracy theories about U.S. involvement are convoluted and unconvincing. And in the context of the war, it also seems to make little sense for Ukraine to risk alienating its Western backers to destroy a pipeline that was not even operating at the time. Since that time, however, a steady drip of intelligence leaks has given us more insight into who might be responsible; a bombshell report in earlier this month in the New York Times revealed that “American intelligence agencies now believe the operation was carried out at least with the loose direction of the Ukrainian government.”

The response to these revelations has been muted, with Western governments no doubt assessing that highlighting it could undermine cohesion between Ukraine and its foreign backers. But ignoring these revelations is a mistake. Instead, they should be treated as a reminder that not every issue in European security can be explained by events that have occurred since February 2022.

Indeed, the destruction of Nord Stream is best understood as a continuation of the energy security disputes that have roiled European politics for two decades. It reminds us that interests vary across Europe, and that many of today’s biggest debates will be shaped by a much broader set of issues than the Ukraine war, whenever and however it ends. Questions about the future of European defense, NATO, Ukrainian integration into Europe, and even how Europe and Russia will interact in the future will be determined by divergent national interests and the context of the contentious history of the region since 1991.

Ever since the Soviet Union started exporting oil and gas to the West in the 1970s, those energy flows have transited large, integrated pipeline networks, carrying not only Russian but also Central Asian energy supplies through Russia, into Ukraine and Belarus, and on to Europe. As recently as 2004, the pipelines that transported all Russian gas to Europe, with the exception of deliveries to Finland and parts of Turkey, transited three key countries—Ukraine, Belarus, and Moldova—with more than 80 percent of Russia’s European gas exports coming through Ukraine.

This system initially worked as intended, but the collapse of the Soviet Union in 1991 created a unique set of problems. What had once been an integrated political and economic bloc was suddenly divided by borders. And the choice of where pipelines transited, where energy supplies came from, or where refineries were located were all suddenly political questions.

The collapse of the Soviet Union in 1991 meant that the choice of where pipelines transited, where energy supplies came from, or where refineries were located were all suddenly political questions.

New republics in Central Asia had to haggle over the costs to send their resources to market; new Eastern European states fought for transit fees that would let them capture some of the wealth generated by energy sales. Russia—at the physical center of this import-export system— benefited most from the legacy of static Soviet-era energy infrastructure, engaging in arbitrage between Central Asia and Europe and pocketing the proceeds. At the same time, Russia was stuck with a costly Soviet legacy: long-running energy subsidies for the countries of Eastern and Central Europe, which strongly opposed paying Moscow world market rates for their energy imports. In 2003, for example, Ukraine was paying $50 per million cubic meters (mcm) and Belarus was paying $30 per mcm, while Western Europe was paying anywhere from $100-$125 per mcm.

Disagreements between Russia and the other post-Soviet states on these issues became more rancorous throughout the 1990s and 2000s, with repeated disputes between Russia and its former satellite states over transit fees and subsidized energy, involving not only neighboring Ukraine but also Belarus and Moldova—the three countries that sat astride the profitable pipeline routes into Europe. These were often more than simple pricing disputes.

The Kremlin tended to be relatively happy to provide energy at low cost when regimes in Eastern Europe were friendly and accommodating. It tended to raise those prices when regimes pushed back, or when they sought greater Western integration. And no matter how friendly the state, there were also tensions over storage facilities, corruption, and theft of oil and gas in transit. As recently as 2020, Russia halted oil supplies to Belarus, unable to reach an agreement on pricing.

Tensions with Ukraine first boiled over in 2006. Ukraine was in one of its periods of shifting toward the West after the Orange Revolution, which had brought pro-Western politician Viktor Yushchenko and his allies to power. As retribution, Russia’s Gazprom canceled a deal negotiated prior to Yushchenko’s presidency that would have provided highly subsidized gas to Ukrainian consumers. The resulting price dispute could not be resolved, and, on Jan. 1, 2006, Russia shut down exports to Ukraine, engaging in a piece of theater as technicians turned dials on live TV to confirm the threat had been carried out.

Gas, of course, continued to flow through the pipelines to Western customers. But over the following days, other European states began to experience shortfalls as Ukraine siphoned gas intended for consumers further down the line. Romania reported lower-than-expected pressure in its pipelines, a drop of around 30 percent in import volume, while Italy was forced to tap emergency gas reserves to deal with the shortfall. Sixteen years before the full Russian invasion of Ukraine, Europe was already aware of the risks associated with political and economic squabbling in the post-Soviet space.

Though the 2006 crisis lasted only four days, it created a significant psychological impact in Europe, which was only amplified by follow-on crises in 2009 and 2010. European policymakers suddenly worried about the reliability of Russian energy supplies. There were two primary concerns. First, could Russia be trusted not to use its energy to extort political or economic concessions from EU member states? And second, would future disputes between Russia and the other former Soviet republics continue to disrupt supplies to European countries farther downstream?

The first concern was dealt with through a package of energy reforms at the European Union level, which increased the resiliency of Europe’s pipeline infrastructure and further integrated the bloc in energy terms. Once complete, it became almost impossible for Russia to isolate any one EU member state from the broader group and extort them. The second concern—the risks raised by disputes among the former Soviet states—was addressed instead through the creation of the Nord Stream pipeline, which brought to fruition a long-running proposal to build a pipeline under the Baltic Sea, thereby bypassing problematic disputes between Russia and its neighbors

This may seem strange from today’s vantage point, but at the time it made a lot of sense. German industry was worried about energy disruptions created by disputes between Russia and the traditional energy transit states, and the original Nord Stream project was backed not only by Germany, but also by the Netherlands and the United Kingdom, which hoped that spur lines to the project might be built. But it was unpopular in Eastern Europe and quickly became a political football between Eastern and Western European Union members, with Poland’s then-Foreign Minister Radoslaw Sikorski describing it as “the Molotov-Ribbentrop Pipeline.” But Western European concerns carried the day, and the first Nord Stream pipeline was completed with only minimal controversy in 2011.

The proposal to build Nord Stream 2, on the other hand, was much more controversial, coming barely a year after the Russian seizure of Crimea. The European Commission was largely on board, but both Eastern European states and then-U.S. President Barack Obama’s White House lobbied against it. The U.S. Congress even threatened to sanction Germany if it went through with the project, a threat that Donald Trump would follow through on as president, passing sanctions that targeted companies working on the project. The pipeline was completed despite these obstacles but was never approved for use, as the certification process was suspended in February 2022. The pipeline was still unused in September 2022, when undersea explosions ripped through both it and Nord Stream 1.

The following months were filled with speculation about the culprit. As one scholar at the Carnegie Endowment put it, “there are aspects of this mystery that resemble an Agatha Christie novel, in which nearly everyone involved appears to have a motive or would benefit from the outcome.”

Russia seemed to be the most obvious candidate. It had, after all invaded Ukraine, seized territory, and committed human rights abuses. Perhaps Russia sought to punish Western European states for their backing of Ukraine, or to spike energy prices by blowing up Nord Stream? Yet the motive seemed shaky. After all, the point of energy blackmail—of dialing down gas supplies to Europe, as the Russians had been doing—would be to encourage European states to abandon support for Ukraine if the winter got bad. Blowing up the pipeline removed that leverage.

Others, most notably Seymour Hersh, suggested that it had been the United States that blew up Nord Stream, in conjunction with Norwegian divers. His logic rested on the long-running opposition in Washington to the pipeline, and on the idea that the United States could not tolerate any resumption of Russian gas flows to Europe. His reporting was widely debunked by open-source analysts, but nonetheless sparked a wave of conspiracy theories, the most outlandish of which saw the left-wing publication the Grayzone take a submarine trip to the explosion site to recover what it claimed was the boot of a U.S. Navy SEAL found on the floor of the ocean near the shattered pipeline.

But none of the information that has emerged in the past few months suggests a link to the United States, and it beggars belief that an administration as cautious about escalation as the Biden administration would consider such a rash move.

For Ukraine, the motive was certainly there. Destroying the pipeline would hurt Russia and remove a potential source of Russian leverage over Europe in the future.

The remaining possibilities were less politically palatable, cutting through the clear picture of right and wrong of the war in Ukraine, suggesting that the victims of Russian aggression might themselves engage in wrongful acts. Yet why would Ukraine, so dependent on Western aid and weapons, risk angering Western European states? It seemed hard to believe.

But the motive was certainly there. Destroying the pipeline would hurt Russia and remove a potential source of Russian leverage over Europe in the future. It would tie the hands of Germany and other states; no matter how hard the winter, it would now be impossible for these states to reverse sanctions and reopen the pipeline. And it would ensure that most Russian energy exports to Europe would still need to transit Ukraine.

More broadly, two decades of contention between Western and Eastern Europe over energy security provides a plausible way of explaining such a choice. The destruction of Nord Stream fits neatly into disagreements over which states within the sprawling European community get to decide exactly what constitutes a shared European energy security. It is a reminder that, despite 18 months of public unity, interests diverge across Europe.

Indeed, Russian oil and gas continue to flow to some landlocked countries in Europe thanks to exemptions in European sanctions restrictions; that energy flows through Ukrainian pipelines. Throughout the past year, the kind of haggling over transit fees that has long characterized energy flows in Eastern Europe has persisted. In April, Hungary announced that it would pay Ukraine directly to permit the transit of Russian oil through the Druzhba pipeline. But Kyiv has also been vocally unhappy with Hungary’s decision to import more Russian gas via the non-Ukrainian TurkStream pipeline. The question is not necessarily, then, one of Russian energy supplies, but rather who gets to decide whether specific supplies will continue or not.

It’s currently unclear whether Russian energy will ever again flow to Europe in large quantities. But one thing is certain: The destruction of Nord Stream once again places Ukraine and other Eastern European states in a position of greater leverage on the energy question. Destroying Nord Stream is an understandable enough choice from the point of view of a country engaged in a desperate war for survival. But it may prompt Ukraine’s partners to reassess just how closely their interests actually align with Kyiv.