A view of a destroyed Ukrainian government administration building following shelling, amid Russia's invasion on Ukraine, in Mykolaiv, Ukraine, April 8, 2022. REUTERS/Ueslei Marcelino 

A firefighter holds a hose next to a burning building, following a missile attack near the Kharkiv International Airport, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, April 12, 2022. Picture taken April 12, 2022. REUTERS/Alkis Konstantinidis TPX IMAGES OF THE DAY 

A local resident walks near an apartment building destroyed during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 3, 2022. REUTERS/Alexander Ermochenko 

A residential house destroyed by shelling, as Russia?s attack on Ukraine continues, is seen in the town of Makariv, in Kyiv region, Ukraine April 1, 2022. Picture taken April 1, 2022. REUTERS/Serhii Mykhalchuk 

Local resident Viktoria Mukhina, 33, (L), prepares soil as she plant tulips near an apartment building damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 4, 2022. REUTERS/Alexander Ermochenko TPX IMAGES OF THE DAY 

A local resident walks past a building damaged by shelling, as Russia?s attack on Ukraine continues, in the town of Makariv, in Kyiv region, Ukraine April 1, 2022. Picture taken April 1, 2022. REUTERS/Serhii Mykhalchuk 

A destroyed house is pictured near where the head of the village, her husband and son were shot and buried in a shallow grave, as Russia's invasion of Ukraine continues, in the village of Motyzhyn, outside Kyiv, Ukraine, April 4, 2022. REUTERS/Marko Djurica 

An aerial view shows residential buildings that were damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 3, 2022. Picture taken April 3, 2022. Picture taken with a drone. REUTERS/Pavel Klimov TPX IMAGES OF THE DAY 

A kettle is placed on the stove inside a destroyed house, amid Russia's invasion of Ukraine, in the village of Kozarovychi, in Kyiv region, Ukraine April 2, 2022. REUTERS/Gleb Garanich TPX IMAGES OF THE DAY 

Burned cars stand near a destroyed house, amid Russia's invasion of Ukraine, in the village of Kozarovychi, in Kyiv region, Ukraine April 2, 2022. REUTERS/Gleb Garanich 

A view shows an apartment building destroyed during Ukraine-Russia conflict in the besieged southern port city of Mariupol, Ukraine April 3, 2022. REUTERS/Alexander Ermochenko 

An interior view shows a children's home damaged in the course of Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 1, 2022. REUTERS/Alexander Ermochenko 

Sergiy, 46, uses his mobile phone as he stands in the courtyard of his sister's house, that was destroyed by Russian shelling, amid Russia's invasion of Ukraine, in Bucha, in Kyiv region, Ukraine April 4, 2022. REUTERS/Zohra Bensemra REFILE - QUALITY REPEAT 

Local residents are seen in front of an apartment building destroyed during Ukraine-Russia conflict in the besieged southern port city of Mariupol, Ukraine March 31, 2022. REUTERS/Alexander Ermochenko 

A damaged car and building are seen, amid Russia's invasion of Ukraine, in Kharkiv, Ukraine, April 4, 2022. REUTERS/Oleksandr Lapshyn 

Local residents walk past an apartment building damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 4, 2022. REUTERS/Alexander Ermochenko 

Local residents walk past a burned building during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 4, 2022. REUTERS/Alexander Ermochenko 

A view shows a building destroyed during Ukraine-Russia conflict in the southern port city of Mariupol Ukraine April 3, 2022. REUTERS/Alexander Ermochenko 

A view shows apartment buildings damaged in the course of Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 4, 2022. REUTERS/Stringer 

Local resident and pensioner Valentina Popyi, 75, who seeks refuge in a children's home damaged in the course of Ukraine-Russia conflict, speaks with neighbours in the southern port city of Mariupol, Ukraine April 1, 2022. REUTERS/Alexander Ermochenko 

A couple hugs while walking past a building that was heavily damaged by shelling, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, April 10, 2022. REUTERS/Alkis Konstantinidis TPX IMAGES OF THE DAY 

A man carries bottles of water as he walks past the building of a theatre destroyed in the course of Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 7, 2022. REUTERS/Alexander Ermochenko 

An interior view shows the theatre destroyed in the course of Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 7, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops inspects the street during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 7, 2022. REUTERS/Alexander Ermochenko 

Natalia Titova, 62, walks as she shows her house, which was destroyed by Russian shelling, amid Russia's Invasion of Ukraine in Chernihiv, Ukraine April 9, 2022. Natalia and her family were staying in the basement, "When the rocket hit our house, we ran into the street, it was very scary" she said. REUTERS/Zohra Bensemra 

People walk past a building destroyed during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 14, 2022. REUTERS/Alexander Ermochenko 

People walk past buildings damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 14, 2022. REUTERS/Alexander Ermochenko 

A man walks past a building destroyed by shelling, amid Russia's Invasion of Ukraine, in Chernihiv, Ukraine April 9, 2022. REUTERS/Zohra Bensemra 

A view shows the building of a theatre destroyed in the course of Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 10, 2022. Picture taken with a drone. REUTERS/Pavel Klimov 

A woman sits in front of a residential building damaged in the course of Ukraine-Russia conflict, on a rainy day in the southern port city of Mariupol, Ukraine April 13, 2022. REUTERS/Alexander Ermochenko TPX IMAGES OF THE DAY 

Lidiya Mezhiritska and her son Oleg Mezhiritsky assess the damage to their house after a rocket exploded outside, in a residential area in Kharkiv, as Russia's attack on Ukraine continues, Ukraine, April 8, 2022. REUTERS/Thomas Peter 

A rescuer walks during a search operation for bodies under the rubble of a building destroyed by Russian shelling, amid Russia's Invasion of Ukraine, in Borodyanka, Kyiv region, Ukraine April 11, 2022. REUTERS/Zohra Bensemra 

Rescuers search for bodies under the rubble of a building destroyed by Russian shelling, amid Russia's Invasion of Ukraine, in Borodyanka, Kyiv region, Ukraine April 11, 2022. REUTERS/Zohra Bensemra 

Residents walk along a street near a building destroyed in the course of the Ukraine-Russia conflict, in the southern port city of Mariupol, Ukraine April 10, 2022. REUTERS/Alexander Ermochenko 

A local looks at a building that was heavily damaged by shelling, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, April 10, 2022. REUTERS/Alkis Konstantinidis 

Emergency workers remove debris of a building destroyed in the course of the Ukraine-Russia conflict, in the southern port city of Mariupol, Ukraine April 10, 2022. REUTERS/Alexander Ermochenko 

A man is seen amidst the debris of buildings, which were damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 14, 2022. REUTERS/Alexander Ermochenko 

A woman walks along a street near an apartment building destroyed during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 14, 2022. REUTERS/Alexander Ermochenko