President Volodymyr Zelenskiy said on Thursday Ukrainian forces were fighting to prevent Russian troops from capturing the former nuclear power plant at Chernobyl.
Elsewhere, parts of Ukraine's southern Kherson region were no longer under Kyiv's control, the regional administration said, as Russian forces attacked by land, sea and air.
(Reporting by Matthias Williams and Maria Tsvetkova; Writing by Alexander Marrow; Editing by Alison Williams)