Smoke rises over the city following recent shelling during Ukraine-Russia conflict in Donetsk, Ukraine June 18, 2022. REUTERS/Alexander Ermochenko

Ukrainian Su-24 frontline bomber flies, amid Russia's attack on Ukraine, near the town of Bakhmut, in Donetsk region, Ukraine June 18, 2022. REUTERS/Gleb Garanich

Onlookers watch as firefighters attempt to put out a fire allegedly caused by a shelling in the Nemyshlianski district, as Russia’s attack on Ukraine continues, in Kharkiv region, Ukraine, June 20, 2022. REUTERS/Leah Millis TPX IMAGES OF THE DAY

Drone footage shows an artillery strike amid military presence in Toshkivka, Luhansk region, Ukraine in this screengrab taken from a video released on June 19, 2022, and obtained by REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. NO RESALES. NO ARCHIVES.

Debris are pictured on the floor in Kharkiv State Zoo Veterinary Academy after it was damaged by overnight shelling, as Russia’s attack on Ukraine continues, in Mala Danylivka, Kharkiv Oblast, Ukraine, June 20, 2022. REUTERS/Leah Millis

Volunteers help an elderly woman to board a train to Dnipro and Lviv during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine June 18, 2022. REUTERS/Gleb Garanich

People remove debris of a building of the lyceum of railway transport destroyed by a missile strike, as Russia's attack on Ukraine continues, in the town of Liubotyn, in Kharkiv region, Ukraine June 20, 2022. REUTERS/Vyacheslav Madiyevskyy

A Ukrainian serviceman sits in a trench at a position, as Russia's attack on Ukraine continues, in Luhansk region, Ukraine June 18, 2022. REUTERS/Anna Kudriavtseva

Ukrainian servicemen carry a coffin with the body of their comrade Artem Dymyd, who was recently killed in a battle against Russian troops, as Russia's attack on Ukraine continues, during a funeral ceremony in Lviv, Ukraine June 21, 2022. REUTERS/Pavlo Palamarchuk

Smoke rises in the sky after shelling near a winter wheat field, amid Russia's attack on Ukraine, near the town of Bakhmut, in Donetsk region, Ukraine June 18, 2022. REUTERS/Gleb Garanich

An elderly woman waits to board a train to Dnipro and Lviv during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine June 18, 2022. REUTERS/Gleb Garanich

A woman walks past destroyed structures at a local market following recent shelling in the course of Ukraine-Russia conflict in Donetsk, Ukraine June 19, 2022. REUTERS/Alexander Ermochenko

Fire burns in a building in the aftermath of shelling at a location given as Seredyna-Buda, Sumy region, Ukraine, in this screengrab obtained from a handout video released on June 19, 2022. State Emergency Service of Ukraine/Handout via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. REUTERS WAS NOT ABLE TO INDEPENDENTLY VERIFY THE AUTHENTICITY OF THE VIDEO, THE DATE IT WAS FILMED AND THE LOCATION OF THE FOOTAGE. MANDATORY CREDIT.

Taras Ratushnyi, the father of soldier Roman Ratushnyi, a well-known activist, holds his Ukrainian flag as he and friends, family, fellow soldiers and others attend Roman's burial service in Kyiv, Ukraine, as Russia's attack on Ukraine continues June 18, 2022. REUTERS/Leah Millis

A woman stands next to a building damaged by shelling at a local market in the course of Ukraine-Russia conflict in Donetsk, Ukraine June 19, 2022. REUTERS/Alexander Ermochenko

Local residents remove debris from a courtyard of an apartment building located in Vannikova street following recent shelling in the course of Ukraine-Russia conflict in Donetsk, Ukraine June 20, 2022. REUTERS/Alexander Ermochenko

A man walks past a destroyed structure at a local market following recent shelling in the course of Ukraine-Russia conflict in Donetsk, Ukraine June 19, 2022. REUTERS/Alexander Ermochenko

Smoke and flame rise after a military strike on a compound of Sievierodonetsk's Azot Chemical Plant, as Russia's attack on Ukraine continues, in Lysychansk, Luhansk region, Ukraine June 18, 2022. REUTERS/Oleksandr Ratushniak TPX IMAGES OF THE DAY