Rescuers work on the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv on June 28, 2022. (Photo by SERGEY BOBOK / AFP)

Rescuers work on the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv on June 28, 2022. (Photo by SERGEY BOBOK / AFP)

Rescuers work on the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv on June 28, 2022. (Photo by SERGEY BOBOK / AFP)

A photograph taken on June 28, 2022 shows the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv. (Photo by SERGEY BOBOK / AFP)

A rescuer walks in a crater in the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv on June 28, 2022. (Photo by SERGEY BOBOK / AFP)

A rescuer stands in a crater in the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv on June 28, 2022. (Photo by SERGEY BOBOK / AFP)

A photograph taken on June 28, 2022 shows the ruins of a school building, partially destroyed by two rockets in the Ukrainian city of Kharkiv. (Photo by SERGEY BOBOK / AFP)

TOPSHOT - A Ukrainian deminer examines a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

TOPSHOT - A Ukrainian deminer examines a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

TOPSHOT - A photograph shows a damaged school hall after missile strikes struck the yard of the school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

TOPSHOT - A woman stands in a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A Ukrainian deminer examines a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A Ukrainian deminer examines a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A Ukrainian deminer examines a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A woman cleans shattered glass in a school class after missile strikes struck the yard of the school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A photograph shows a damaged archives room in a school after missile strikes struck the yard of the school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A woman carries documents from a damaged archives room in a school after missile strikes struck its yard in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A photograph shows a damaged school hall after missile strikes struck the yard of the school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A woman inspects damages in a school after missile strikes struck the yard of the school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A photograph shows a damaged school hall after missile strikes struck the yard of the school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

A woman stands in a crater caused by missile strikes which struck the yard of a school in a residential area of Kharkiv on June 27,2022, amid the Russian invasion of Ukraine. - Ukrainian President Volodymyr Zelensky urged on June 27, 2022 world powers to do their utmost to help end Russia's invasion by the end of the year, as G7 leaders planned new sanctions and vowed to support Ukraine "as long as it takes". (Photo by SERGEY BOBOK / AFP)

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of a bomb crater after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A women sweps broken glasses in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A woman takes a photo of a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A woman takes a photo of a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of a bomb crater after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of a bomb crater at the backyard of a civil building after Russian shell landed last night as the Russian-Ukraine war continues on June 27, 2022, at Shevchenka Street in Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of a bomb crater after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A Ukrainian soldier inspects near a bomb crater at the scene after Russian shell hit a school building last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE - JUNE 27: A view of damage in a school building after Russian shell hit last night as the Russian-Ukraine war continues on June 27, 2022, in Shevchenkivs'kyi district of Kharkiv, Ukraine. Metin Aktas / Anadolu Agency/ABACAPRESS.COM

A crator left by a russian rocket after shelling of one of the city schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

A rescuer is seen during the elimination of the consequences of russian shelling at one of the schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Shards of a russian missile are found after a rocket attack on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

A soldier stands in a crator left by a russian rocket after shelling of one of the schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

A soldier is seen during the elimination of the consequences of russian shelling at one of the schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

A shard of a russian missile is found after a rocket attack on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Shards of a russian missile are found after a rocket attack on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Elimination of the consequences of russian shelling at one of the schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Elimination of the consequences of russian shelling at one of the schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Elimination of the consequences of russian shelling at one of the schools in Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

Aftermath of rocket fire by the russian troops on one of the city schools of Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

A woman is seen on the premises of one of the city schools damaged in the result of a rocket attack by the russian troops, Kharkiv, northern Ukraine, June 27, 2022. Photo by Vyacheslav Madiyevskyi/Ukrinform/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: Cleaner cleans broken windows at a school damaged by a Russian missile in the yard of an institution in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: Cleaner cleans broken windows at a school damaged by a Russian missile in the yard of an institution in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: The corridor of the school near which the Russian rocket hit in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: Teacher collects documentation at a school in the yard of which was hit by a Russian missile in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: Students carry documentation at a school in the yard of which was hit by a Russian missile in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: Funnel from the impact of a Russian missile in the school yard yard in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: Consequences of a Russian missile hitting a schoolin Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: The school teacher cleans broken windows at a school damaged by a Russian missile in the yard of an institution in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM

KHARKIV, UKRAINE – JUNE 27: The corridor of the school near which the Russian rocket hit in Kharkiv, Ukraine on June 27, 2022. Sofia Bobok / Anadolu Agency/ABACAPRESS.COM