"All this undeniably proves that Washington, contrary to White House and Pentagon claims, is directly involved in the conflict in Ukraine," the Russian defence ministry said in a statement on Tuesday.
Hiroshima on Saturday remembered the atomic bombing 77 years ago as officials, including the head of the United Nations, warned against nuclear weapons
Energoatom, operator of the Zaporizhzhia nuclear power plant in the south of the country, said on Saturday that parts of the facility had been "seriously damaged" by military strikes and one of its reactors was forced to shut down.
Ukrainian President Volodymyr Zelensky said Moscow was responsible and accused it of committing "an open, brazen crime, an act of terror", calling for sanctions on the entire Russian nuclear industry.
Among others, General Alexander Dvornikov was removed after being given overall command of the operation in Ukraine. In addition, at least 10 Russian generals were killed on the battlefield in Ukraine, the update said.
"Any attack to a nuclear plant is a suicidal thing," Guterres told a news conference in Japan, where he attended the Hiroshima Peace Memorial Ceremony on Saturday to commemorate the 77th anniversary of the world's first atomic bombing.
Kyiv's infrastructure ministry wrote on Telegram on Sunday that a convoy of Ukrainian supplies had left, with three ships departing from Chornomorsk and one from Odessa.
Heavy fighting was reported in frontline towns near the eastern city of Donetsk, where Ukrainian officials said Russian troops were launching waves of attacks as they try to seize control of the industrialised Donbas region.
The Russians fired over 120 rockets at the town of Nikopol, across the Dnieper River from the plant, Dnipropetrovsk Gov. Valentyn Reznichenko said. Several apartment buildings and industrial sites were damaged, he said.