Family members are seen in a street near residential buildings damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 22, 2022. REUTERS/Alexander Ermochenko 

A missile is seen on a road, amid Russia's invasion of Ukraine, in Gostomel region, Ukraine April 22, 2022. REUTERS/Mikhail Palinchak 

A military sapper prepares to destroy a non-exploded aviation bomb left after Russia's invasion in Kyiv Region, Ukraine April 21, 2022. REUTERS/Mykola Tymchenko 

A military sapper holds a combat part of a Russian Uragan multiple rocket launch shell left after Russia's invasion in Kyiv Region, Ukraine April 21, 2022. REUTERS/Mykola Tymchenko 

Military sappers destroy non-exploded aviation bombs left after Russia's invasion in Kyiv Region, Ukraine April 21, 2022. REUTERS/Mykola Tymchenko 

Military sappers place a combat part of a Russian Uragan multiple rocket launch shell left after Russia's invasion in Kyiv Region, Ukraine April 21, 2022. REUTERS/Mykola Tymchenko 

Military sappers inspect a combat part of a Russian Uragan multiple rocket launch shell left after Russia's invasion in Kyiv Region, Ukraine April 21, 2022. REUTERS/Mykola Tymchenko 

A man walks past a missile that stuck in the ground, amid Russia's invasion of Ukraine, in Rubizhne, Luhansk region, Ukraine, April 21, 2022. REUTERS/Hamuda Hassan 

A projectile is stuck in the ground, following Russian shelling, amid Russia's attack on Ukraine, in Kharkiv, Ukraine, April 21, 2022. REUTERS/Alkis Konstantinidis 

A person looks at the remains of a Russian missile, as Russia's invasion of Ukraine continues, in the village of Kozarovychi, near Kyiv, Ukraine, April 22, 2022. REUTERS/Viacheslav Ratynskyi 

A local resident Heorhii stands next to non-exploded mortar shells left during Russia's invasion, in the village of Yahidne, Ukraine April 20, 2022. REUTERS/Vladyslav Musiienko 

A local resident walks past a non-exploded multiple rocket launch shell, as Russia's attack on Ukraine continues, in the village of Kukhari in Kyiv region, Ukraine April 19, 2022. REUTERS/Vladyslav Musiienko 

A local resident Volodymyr shows a non-exploded multiple rocket launch shell inside a house of his neighbour Vira, who was killed during Russia's invasion in the village of Kukhari in Kyiv region, Ukraine April 19, 2022. REUTERS/Vladyslav Musiienko 

A local resident Serhii stands next to a used multiple rocket launch shell, as Russia?s invasion on Ukraine continues, in the village of Kukhari, in Kyiv region, Ukraine April 16, 2022. REUTERS/Vladyslav Musiienko 

A local resident Natania stands next to a non-exploded multiple rocket launch shell, as Russia?s invasion on Ukraine continues, in the village of Kukhari, in Kyiv region, Ukraine April 16, 2022. REUTERS/Vladyslav Musiienko 

Remains of a missile are seen on the ground near an apartment building damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 12, 2022. REUTERS/Alexander Ermochenko 

A military sapper picks up an unexploded part of a cluster bomb left after Russia's invasion near the village of Motyzhyn, in Kyiv region, Ukraine April 10, 2022. REUTERS/Mykola Tymchenko 

A military sapper carries an unexploded shell left after Russia's invasion near the village of Motyzhyn, in Kyiv region, Ukraine April 10, 2022. REUTERS/Mykola Tymchenko 

Military sappers carry unexploded shells left after Russia's invasion near the village of Motyzhyn, in Kyiv region, Ukraine April 10, 2022. REUTERS/Mykola Tymchenko 

A Ukrainian missile is seen inside a destroyed building that was used as a temporary base by the Russian army, in the village of Malaya Rohan, as Russia's attack on Ukraine continues, in the Kharkiv region, Ukraine, April 9, 2022. REUTERS/Alkis Konstantinidis 

Men inspect remains of a missile near a rail station, amid Russia's invasion of Ukraine, in Kramatorsk, Ukraine April 8, 2022. REUTERS/Stringer