A destroyed Russian anti-aircraft missile system, marked with the "Z" symbol, is seen in the village of Husarivka, amid Russia's attack on Ukraine, in Kharkiv region, Ukraine, April 14, 2022. Picture taken April 14, 2022. REUTERS/Alkis Konstantinidis 

Wrecks of a Russian Armoured Personnel Carriers (APC) and military vehicles are seen on the front line near Kyiv as Russia's invasion of Ukraine continues, Ukraine March 29, 2022. REUTERS/Gleb Garanich 

A Ukrainian serviceman walks near the remain of a Russian Mi-8 helicopter that crashed during Russia?s invasion near the village of Havronshchyna in Kyiv region, Ukraine April 27, 2022. REUTERS/Mykola Tymchenko 

People pose for a picture in front of the debris of Russian military machinery destroyed during Russia's invasion of Ukraine, in the village of Rusaniv, Kyiv region, Ukraine April 25, 2022. REUTERS/Vladyslav Musiienko TPX IMAGES OF THE DAY 

Destroyed Russian Army vehicles are seen in the forest, amid Russia's invasion to Ukraine, in Yahidne, Chernihiv region, Ukraine April 27, 2022. REUTERS/Zohra Bensemra 

Scavengers search for useful metal parts in a destroyed Russian tank outside Kyiv, Ukraine, April 20, 2022. REUTERS/Jorge Silva 

Ukrainian soldiers walk next to destroyed Russian tanks and armoured vehicles, amid Russia's invasion of Ukraine, in Bucha, in Kyiv region, Ukraine, April 6, 2022. REUTERS/Alkis Konstantinidis 

A local resident rides a motorcycle next to a Russian armoured vehicle destroyed during Russia's invasion, in the village of Yahidne, Ukraine April 20, 2022. REUTERS/Vladyslav Musiienko 

Destroyed Russian military vehicles are seen on a street in the settlement of Borodyanka, as Russia's invasion of Ukraine continues, in the Kyiv region, Ukraine March 3, 2022. Picture taken with a drone. REUTERS/Maksim Levin 

A destroyed Russian armoured fighting vehicle is seen, as Russia's attack on Ukraine continues, in the village of Lukianivka, recently liberated by Ukrainian Armed Forces, in Kyiv region, Ukraine March 27, 2022. REUTERS/Serhii Nuzhnenko 

A view shows destroyed Russian Army multiple rocket launchers with the letter "Z" painted on their sides in Kharkiv, Ukraine February 25, 2022. REUTERS/Maksim Levin 

Ukrainian servicemen walk by a damaged vehicle, at the site of a fighting with Russian troops, after Russia launched a massive military operation against Ukraine, in Kyiv, Ukraine February 26, 2022. REUTERS/Valentyn Ogirenko TPX IMAGES OF THE DAY 

Wrecks of a Russian Armoured Personnel Carriers (APC) are seen in the north Kyiv region, Ukraine March 28, 2022.REUTERS/Gleb Garanich 

A Ukrainian serviceman stands near the wreck of a Russian Armoured Personnel Carriers (APC) on the front line in the Kyiv region, Ukraine March 28, 2022. REUTERS/Gleb Garanich 

Ukrainian servicemen are seen next to a destroyed armoured vehicle, which they said belongs to the Russian army, outside Kharkiv, Ukraine February 24, 2022. REUTERS/Maksim Levin TPX IMAGES OF THE DAY 

Ukrainian servicemen inspect a damaged vehicle, at the site of fighting with Russian troops, after Russia launched a massive military operation against Ukraine, in Kyiv, Ukraine February 26, 2022. REUTERS/Valentyn Ogirenko 

A Ukrainian service member inspects remains of a destroyed Russian T-72 tank, as Russia's attack on Ukraine continues, in the recently liberated village of Lukianivka, in Kyiv region, Ukraine March 27, 2022. REUTERS/Serhii Nuzhnenko 

A Ukrainian serviceman stands near the wreck of a Russian tank on the front line in the Kyiv region, Ukraine March 28, 2022. REUTERS/Gleb Garanich 

A wreck of a Russian Armoured Personnel Carriers (APC) is seen on the front line in the Kyiv region, Ukraine March 28, 2022. REUTERS/Gleb Garanich 

A destroyed Russian tank, is seen beside a house, amid Russia's invasion of Ukraine, in Dmytrivka village, west of Kyiv, Ukraine April 1, 2022. REUTERS/Zohra Bensemra 

A police officer films a damaged Russian artillery tank, amid Russia's invasion of Ukraine, in Trostianets, Sumy region, Ukraine April 15, 2022. REUTERS/Zohra Bensemra 

A man jumps from a Russian T-72 tank destroyed during Russia's invasion, in the village of Yahidne, Ukraine April 20, 2022. REUTERS/Vladyslav Musiienko 

A view shows destroyed Russian Army all-terrain infantry mobility vehicles Tigr-M (Tiger) on a road in Kharkiv, Ukraine February 28, 2022. REUTERS/Vitaliy Gnidyi