Chernobyl, 40 Years On

Forty years after the world's worst nuclear disaster, Chernobyl remains a defining moment in global history—not just for its ecological and human toll, but as a catalyst that exposed the Soviet Union’s systemic failures and helped bring about its collapse. In this episode, Martin De Caro and MIT researcher Marianna Budrin explore how the 1986 meltdown, initially covered up by Moscow, became an international crisis due to radiation spreading across Scandinavia—forcing Mikhail Gorbachev to break silence and launch glasnost, the policy of openness. This moment of transparency, however, only deepened public distrust in the Soviet system, fueling anti-institutional sentiment across Ukraine, Belarus, and the Baltics. The disaster also reshaped global nuclear governance, leading to new international treaties on accident reporting and mutual assistance, and establishing the concept of 'safety culture' in nuclear operations. But the most haunting legacy is Ukraine’s decision to give up its inherited nuclear arsenal—then the world’s third largest—after the USSR’s fall, a choice now widely regretted in light of Russia’s 2022 invasion and the failure of the Budapest Memorandum to deter aggression. As the war continues, Russian attacks on the Chernobyl sarcophagus have reignited fears of a new radiation crisis, underscoring how the past is never truly buried.