Ukrainian President Volodymyr Zelenskiy says Russian forces are trying to seize the Chernobyl power plant, which is the site of world's worst nuclear disaster.
MoreAt 01:23:40 on 26 April 1986, the failure of a routine test at the Chernobyl Nuclear Power Plant in Ukraine, then part of the Soviet Union, caused reactor 4 to explode, releasing parts of its radioactive core.
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