On April 26, 1986, Soviet engineers at the Chernobyl nuclear power plant were conducting a safety test.

Doomed by a fatal design flaw and pushed to the limit by human negligence, reactor 4 exploded amid an attempted shutdown during a routine procedure, setting off a chain of events that ultimately released radioactive material hundreds of times greater than that of the atomic bomb dropped on Hiroshima.

Although the accident occurred north of Kyiv, Ukraine – near the border with Belarus – radioactive fallout was soon detected throughout northern and central Europe.

Yet the Soviets did what they could to prevent the spread of information that would reveal the true horror of what had occurred.

For decades, researchers, political leaders and advocacy groups have worked to uncover the story of the explosion.

While science has allowed us to understand the circumstances of the explosion itself, it has taken much more work to uncover the layers of mismanagement, negligence and misinformation that resulted in human suffering, ecological disaster and economic damage.

One of the problems is that many of the official Soviet records of the event, such as the KGB files, are located in Moscow and inaccessible to all but a few Russian government agencies.

But there is a partial workaround – because East Germany was a Soviet satellite state and not a full member of the Soviet Union, official documents remained in the country after the fall of the Berlin Wall.

In 1991, after the reunification of Germany, the German government passed a law allowing for the declassification of certain files from the Stasi, East Germany’s secret police and intelligence service.

These files can now give us further insight into the mismanagement of Chernobyl, since the East German Stasi and the Soviet KGB were in communication on the matter.

I have spent the past three years reading Stasi files and researching the creation of misinformation in the former Eastern bloc, meeting with Stasi archivists in Berlin and viewing the original archival rooms in the former Stasi headquarters.

Looking at formerly top secret communication between the KGB and Stasi, it is clear that despite publicly insisting everything was under control, both intelligence agencies knew the explosion was absolutely devastating. They kept detailed records of hospitalizations, casualties, damaged crops, contaminated livestock and radiation levels.

But only the very top officials in East Germany and the Soviet Union had access to these numbers. The main fear for both the KGB and Stasi was not the radiation that would harm affected populations but the damage done to their respective countries’ reputations.

Controlling the message

Handling the press was a top priority.

In the Soviet Union, top government officials created their own briefings for the media to be published at precise dates and times.

In a set of classified documents that one government official bravely saved and later published, the concreteness with which the lies were devised is apparent.

It documents Mikhail Gorbachev, then-leader of the Soviet Union, saying in a Politburo meeting with top government officials: “When we inform the public, we should say that the power plant was being renovated at the time, so it doesn’t reflect badly on our reactor equipment.”

Later in the same meeting, another senior Soviet official, Nikolai Ryzhkov, suggests that the group prepare three different press releases – one for the Soviet people, one for the satellite states and another for Europe, the US and Canada.

In East Germany, the Stasi reports mirrored this messaging.

Although top officials are briefed on the presence of radioactive contaminants, the formerly classified Stasi files reiterate that the public is to be told that “absolutely no danger” is present.

East German media, controlled by the state, then disseminated this information to the public.

Many recognized that their own government wasn’t telling them the truth.

However, they also knew that Western media would take any chance they got to disparage the Eastern bloc. The result was that many people knew that they weren’t being told the truth, but they weren’t sure exactly what the truth was.

Much of the East German and Soviet propaganda at that time was designed to confuse and cast doubt, not necessarily to fully persuade. The idea was that enough conflicting information would tire people out.

Downplaying economic concerns

One of the Stasi’s major concerns following the disaster was the economic damage that was sure to affect East Germany. Once people began to learn of the radioactive fallout over much of Europe, they grew fearful of their own produce and dairy products.

Children began refusing to drink milk at school, while people frequently asked produce vendors whether their products were grown in a greenhouse or outdoors. On the whole, people stopped buying many of these products.

A sign advertises for vegetables free of contamination in a West Germany. Photo: Getty

With an excess of these goods, the East German government needed to devise a plan to continue to make money off potentially contaminated goods.

The Stasi’s solution was to increase export of these goods to West Germany.

In the formerly classified files, Stasi officials claim that exports would spread out the consumption of radioactive products, so that no one would consume unsafe levels of contaminated meat and produce.

The problem for the East Germans was that West Germany quickly amended their regulations for border crossings from East to West. Vehicles emitting certain levels of radiation were no longer allowed across the border.

As a response, the lower-ranking Stasi workers were required to clean radioactive vehicles themselves. In doing so, the state was knowingly risking the health and safety of its own officials.

The East German food export plan was modeled on a similar one proposed by the Soviet government.

The Soviet strategy, however, was not to export contaminated goods abroad but rather to send contaminated meat products to “the majority of regions” in the Soviet Union “except for Moscow.”

An Achilles’ Heel

When the Stasi was founded in 1950, many of its employees genuinely believed in the East German cause.

Having witnessed the horrors of Nazi Germany, many older Stasi workers saw the East German state as the answer to creating a just and equitable society.

By the 1980s, however, this sentiment had grown rare. Instead, many Stasi workers viewed their jobs as means to a decent income and privileged government treatment.

As a result, many Stasi workers had grown disillusioned and dispassionate.

It was little surprise, then, that the Stasi put up little resistance when protesters stormed their headquarters in 1990, months after the Berlin Wall fell.

While there are many factors in the demise of the communist bloc, the way the East German and Soviet governments handled the aftermath of Chernobyl contributed greatly to the growing popular sentiment against each regime.

In East Germany, the disinformation campaign after the nuclear disaster only strengthened the message that the state did not have its people’s best interests in mind and that it was willing to sacrifice their health and well-being in order to maintain a certain image.

Lauren Cassidy is a Lecturer in German and Russian Studies at Binghamton University, State University of New York.