The shelling near the city of Kupiansk came as UK officials said that Russia may try to retake the area, which was captured by Kyiv in a lightning counteroffensive last September after more than six months of Russian occupation.
Volodymyr Zelenskyy on Sunday vowed stern retaliation for a Russian missile strike in the center of the northern Ukrainian city of Chernihiv that killed seven people
IAEA has repeatedly expressed concern about the Zaporizhzhia Nuclear Power Plant, which is one of the 10 biggest in the world, amid fears of a potential nuclear catastrophe