Villagers queue to buy cigarettes and bread from a peddler in the village of Staryi Saltiv, east Kharkiv, Ukraine, Friday, May 20, 2022. The village formerly occupied by Russian forces is back under Ukrainian control, albeit very close to the front line and under constant shelling. (AP Photo/Bernat Armangue)

A van drives across a bridge repaired in Vilkhivka, outside Kharkiv, in eastern Ukraine, Friday, May 20, 2022. (AP Photo/Bernat Armangue)

An unexploded projectile lies on a side street in the town of Vilkhivka, on the outskirts of Kharkiv, in eastern Ukraine, Friday, May 20, 2022.. (AP Photo/Bernat Armangue)

Ukrainian servicemen sit in a bus after leaving Mariupol's besieged Azovstal steel plant, near a penal colony, in Olyonivka, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Friday, May 20, 2022. (AP Photo)

A Ukrainian serviceman inspects a school damaged during a battle between Russian and Ukrainian forces in the village of Vilkhivka, on the outskirts of Kharkiv, in eastern Ukraine, Friday, May 20, 2022. (AP Photo/Bernat Armangue)

A woman looks at a destroyed Russian tank installed as a symbol of war in central Kyiv, Ukraine, Friday, May 20, 2022. (AP Photo/Efrem Lukatsky)

Self-propelled artillery vehicles 'Gvozdika' ('Carnation') of Donetsk People's Republic militia fire towards Ukrainian army position, near the town of Yasynuvataya, outside Donetsk, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Friday, May 20, 2022. (AP Photo/Alexei Alexandrov)

Ukrainian Foreign Minister Dmytro Kuleba, right, and Vatican Secretary for Relations with States Archbishop Paul Richard Gallagher lay flowers at the Memorial Wall of Fallen Defenders of Ukraine in Russian-Ukrainian War in Kyiv, Ukraine, Friday, May 20, 2022. (AP Photo/Efrem Lukatsky)

A Ukrainian serviceman secures a position in the village of Vilkhivka, on the outskirts of Kharkiv, in eastern Ukraine, Friday, May 20, 2022. (AP Photo/Bernat Armangue)

A Ukrainian serviceman holds the helmet used by Russian troops inside a school damaged during a battle between Russian and Ukrainian forces in the village of Vilkhivka, on the outskirts of Kharkiv, in eastern Ukraine, Friday, May 20, 2022. (AP Photo/Bernat Armangue)

An APC of Donetsk People's Republic militia stands not far from Mariupol's besieged Azovstal steel plant, in Mariupol, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Thursday, May 19, 2022. (AP Photo)

Villagers wait for aid distribution by Kharkiv's Red Cross in the village of Staryi Saltiv, east Kharkiv, Ukraine, Friday, May 20, 2022. The village formerly occupied by Russian forces is back under Ukrainian control, albeit very close to the front line and under constant shelling. (AP Photo/Bernat Armangue)

Used shell casings lie at a position of self-propelled artillery vehicles 'Gvozdika' ('Carnation') of Donetsk People's Republic militia firing towards Ukrainian army position, near the town of Yasynuvataya, outside Donetsk, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Friday, May 20, 2022. (AP Photo/Alexei Alexandrov)

Yuri Kuzinskiy, right, and Alexey Goruliov remove debris moments after Kuzinskiy's house was bombed in Kharkiv, in eastern Ukraine, Friday, May 20, 2022. Kuzinskiy was sleeping on the couch when a shell hit his house. (AP Photo/Bernat Armangue)

Ukrainian servicemen sit in a bus after leaving Mariupol's besieged Azovstal steel plant, near a penal colony, in Olyonivka, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Friday, May 20, 2022. (AP Photo)