Russian troops hand over control of the Chernobyl nuclear power plant back to the Ukrainians

Russian troops handed control of the Chernobyl nuclear power plant back to the Ukrainians and began leaving the heavily contaminated site more than a month after taking it over, authorities said Thursday, as fighting raged on the outskirts of Kyiv and other fronts.

Ukraine’s state power company, Energoatom, said the pullout at Chernobyl came after soldiers received significant doses of radiation from digging trenches in the forest in the exclusion zone around the closed plant. But there was no independent confirmation of that.

The withdrawal took place amid growing indications the Kremlin is using talk of de-escalation in Ukraine as cover while regrouping, resupplying its forces and redeploying them for a stepped-up offensive in the eastern part of the country.

Ukrainian President Volodymyr Zelenskyy said Ukraine is seeing a buildup of Russian forces for new strikes on the Donbas, and we are preparing for that.

Russian forces seized the Chernobyl site in the opening stages of the February 24 invasion, raising fears that they would cause damage or disruption that could spread radiation. The workforce at the site oversees the safe storage of spent fuel rods and the concrete-entombed ruins of the reactor that exploded in 1986.

Edwin Lyman, a nuclear expert with the US-based Union of Concerned Scientists, said it seems unlikely a large number of troops would develop severe radiation illness, but it was impossible to know for sure without more details.

He said contaminated material was probably buried or covered with new topsoil during the cleanup of Chernobyl, and some soldiers may have been exposed to a hot spot of radiation while digging. Others may have assumed they were at risk too, he said.

Early this week, the Russians said they would significantly scale back military operations in areas around Kyiv and the northern city of Chernihiv to increase trust between the two sides and help negotiations along.

NATO Secretary-General Jens Stoltenberg said intelligence indicates Russia is not scaling back its military operations in Ukraine but is instead trying to regroup, resupply its forces and reinforce its offensive in the Donbas.

“Russia has repeatedly lied about its intentions,” Stoltenberg said. At the same time, he said, pressure is being kept up on Kyiv and other cities, and “we can expect additional offensive actions bringing even more suffering.”

The Donbas is the predominantly Russian-speaking industrial region where Moscow-backed separatists have been battling Ukrainian forces since 2014. In the past few days, the Kremlin, in a seeming shift in its war aims, said that its main goal now is gaining control of the Donbas, which consists of the Donetsk and Luhansk regions, including Mariupol.

The top rebel leader in Donetsk, Denis Pushilin, issued an order to set up a rival city government for Mariupol, according to Russian state news agencies, in a sign of Russian intent to hold and administer the city.

Russian President Vladimir Putin said that conditions weren’t yet ripe for a cease-fire and that he wasn’t ready for a meeting with Zelenskyy until negotiators do more work, Italian Premier Mario Draghi said after a telephone conversation with the Russian leader.