World Ukraine commemorated the 40th anniversary of the Chornobyl disaster on Sunday, amid fears that Russia's four-year war could spark a repeat of the world's worst nuclear accident that led to thousands of deaths and devastating environmental consequences. Russian actions on Zaporizhzhia power plant pose similar threat, Zelenskyy says Listen to this article Estimated 4 minutes The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. People dressed in hazmat suits place candles at a memorial for victims of the 1986 Chornobyl nuclear plant disaster in the northern Ukrainian town of Slavutych on Sunday. (Genya Savilov/AFP/Getty Images) Ukraine commemorated the 40th anniversary of the Chornobyl disaster on Sunday, amid fears that Russia's four-year war could spark a repeat of the world's worst nuclear accident that led to thousands of deaths and devastating environmental consequences.…