"A nuclear disaster did, nevertheless, occur—not because of war but as the result of an explosion at the Chernobyl nuclear power plant on April 26, 1986. This event also changed Gorbachev. It revealed "the sicknesses of our system . . . the concealing or hushing up of accidents and other bad news, irresponsibility and carelessness, slipshod work, wholesale drunkenness." For decades, he admonished the Politburo, "scientists, specialists, and ministers have been telling us that everything was safe. . . . [Y]ou think that we will look on you as gods. But now we have ended up with a fiasco." Henceforth there would have to be glasnost' (publicity) and perestroika (restructuring) within the Soviet Union itself. "Chernobyl," Gorbachev acknowledged, "made me and my colleagues rethink a great many things.""