Today (26 April) is the 35 th anniversary of the Chernobyl nuclear disaster. The No. 4 reactor in the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the then Ukrainian Soviet Socialist Republic, exploded as the result of mismanagement and human errors. It is considered the worst nuclear disaster in history, both in terms of cost and casualties, but just as importantly, it also accelerated the erosion processes that led to the collapse of the Soviet bloc and the Soviet Union itself. In the country I know best, Bulgaria, the regime tried to keep the disaster under wraps, the only reliable source at the time being Radio Free Europe, which the communist authorities tried to jam. The Soviet Union also kept silent.