Vera Kosolopenko, is pictured at the entrance of a basement where she sheltered after her house was hit during Russian bombing, amid Russia's attack on Ukraine, in the village of Bezruky, Derhachi district, Kharkiv region, Ukraine, May 14, 2022. REUTERS/Ricardo Moraes 

An Israeli man stands still outside his car next to a bomb shelter, as a siren sound marks the beginning of Israel's Memorial Day, commemorating fallen soldiers of Israel's wars and Israeli victims of hostile attacks, near Sderot, Israel May 3, 2022. REUTERS/Amir Cohen 

The door that leads to a bomb shelter where more than a hundred residents were trapped for several days in early March, is seen at a building that normally houses a variety of businesses including an agricultural machinery repair company, which according to local residents was occupied by Russian soldiers in Bucha, Ukraine April 19, 2022. Picture taken April 19, 2022. To match Special Report UKRAINE-CRISIS/BUCHA-KILLINGS-SOLDIERS REUTERS/Zohra Bensemra 

A Ukrainian woman Zhanna Lishchynska stands inside a bomb shelter in her house, amid Russia's invasion of Ukraine, in Zaporizhzhya, Ukraine April 17, 2022. REUTERS/Ueslei Marcelino TPX IMAGES OF THE DAY 

A Ukrainian woman Zhanna Lishchynska enters a bomb shelter in her house, amid Russia's invasion of Ukraine, in Zaporizhzhya, Ukraine April 17, 2022. REUTERS/Ueslei Marcelino 

A Ukrainian woman Zhanna Lishchynska leaves a bomb shelter in her house, amid Russia's invasion of Ukraine, in Zaporizhzhya, Ukraine April 17, 2022. REUTERS/Ueslei Marcelino 

Nadiia Chuhai lies in her bed inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

Oleksii holds his cat Ryzhyi in front of the entrance of Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

People stand in front of the entrance of Azot chemical plant's bomb shelter, where they have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

A woman stands in front of the entrance of Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

Women sit on a bed inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

People stand in front of the entrance of Azot chemical plant's bomb shelter, where they have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

A woman stands inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

A woman stands above Nadiia Chuhai lying in her bed inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

A man holds his baby inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica TPX IMAGES OF THE DAY 

Women stand inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

People lie in beds inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

Children run through Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

A man lies on a bed inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

Raisa Prudnikova stands inside Azot chemical plant's bomb shelter, where people have been hiding from from shelling since the beginning of the war, in Sievierodonetsk, Luhansk region, Ukraine, April 16, 2022. REUTERS/Marko Djurica 

Pensioners Yuri and Maria stand at the door to their underground bomb shelter as they look at a residential building that was hit by a shell during a bombardment from Russian positions in a neighbourhood in northern Kharkiv as Russia's attack on Ukraine continues, Ukraine, March 31 2022. REUTERS/Thomas Peter 

A cat sits near people talking inside of a bomb shelter which is located near the destroyed Ukrainian government administration building following a bombing, as Russia's invasion of Ukraine continues, in Mykolaiv, Ukraine, March 29, 2022. Picture taken March 29, 2022. REUTERS/Nacho Doce 

Elizabeth Kaplun, 81, is helped by her grandson Yuriy Kaplun, 33, and Steve, a security adviser of journalists, as she enters inside a bomb shelter which is located near a destroyed Ukrainian government administration building following a bombing, as Russia's invasion of Ukraine continues, in Mykolaiv, Ukraine, March 29, 2022. REUTERS/Nacho Doce 

A man talks with his mobile phone inside of a bomb shelter which is located near a destroyed Ukrainian government administration building following a bombing, as Russia's invasion of Ukraine continues, in Mykolaiv, Ukraine, March 29, 2022. REUTERS/Nacho Doce 

Elizabeth Kaplun, 81, is helped by her grandson Yuriy Kaplun, 33, and Steve, a security adviser of journalists, as she enters inside a bomb shelter which is located near a destroyed Ukrainian government administration building following a bombing, as Russia's invasion of Ukraine continues, in Mykolaiv, Ukraine, March 29, 2022. REUTERS/Nacho Doce 

Women talk inside of a bomb shelter which is located near a destroyed Ukrainian government administration building following a bombing, as Russia's invasion of Ukraine continues, in Mykolaiv, Ukraine, March 29, 2022. REUTERS/Nacho Doce 

A woman and her daughter, who have been in hiding from bombardment since the beginning of the war, sit in the basement of an apartment building that serves as their bomb shelter in a neighbourhood that is left without water, gas and heating after of intensive shelling, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

Women sit in their bomb shelter where they have been hiding since the beginning of the war in a neighbourhood that has been largely abandoned and left without water, gas and heating, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

Women are seen in their bomb shelter where they have been hiding since the beginning of the war in a neighbourhood that has been largely abandoned and left without water, gas and heating, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

Lyubov Mikhailovna sits in her bomb shelter where she has been hiding since the beginning of the war in a neighbourhood that has been largely abandoned and left without water, gas and heating, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

Igor Ostrovsky opens the door to his bomb shelter where he has been hiding since the beginning of the war in a neighbourhood that has been largely abandoned and left without water, gas and heating, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

Programming students Vladislav and Vitali Mamin study in their bomb shelter where they have been hiding with their parents since the beginning of the war in a neighbourhood that has been largely abandoned and left without water, gas and heating, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

Igor Ostrovsky sits in his bomb shelter where he has been hiding since the beginning of the war in a neighbourhood that has been largely abandoned and left without water, gas and heating, as Russia's attack on Ukraine continues, in Kharkiv, Ukraine, March 28, 2022. REUTERS/Thomas Peter 

A man rests at a bomb shelter from possible air raids, as Russia's attack on Ukraine continues, in Kyiv, Ukraine March 28, 2022. REUTERS/Mikhail Palinchak 

A woman rests at a bomb shelter from possible air raids, as Russia's attack on Ukraine continues, in Kyiv, Ukraine March 28, 2022. REUTERS/Mikhail Palinchak 

A man rests at a bomb shelter from possible air raids, as Russia's attack on Ukraine continues, in Kyiv, Ukraine March 28, 2022. REUTERS/Mikhail Palinchak 

People listen to classical music performed by local musicians in a metro station that serves as a bomb shelter in Kharkiv, as Russia's attack on Ukraine continues, Ukraine, March 26, 2022. REUTERS/Thomas Peter 

People wait for the start of a classical music concert performed by local musicians in a metro station that serves as a bomb shelter in Kharkiv as Russia's attack on Ukraine continues, Ukraine, March 26, 2022. REUTERS/Thomas Peter 

People sing Ukraine's national anthem during a classical music concert performed by local musicians in a metro station that serves as a bomb shelter in Kharkiv as Russia's attack on Ukraine continues, Ukraine, March 26, 2022. REUTERS/Thomas Peter 

People listen to classical music performed by local musicians in a metro station that serves as a bomb shelter in Kharkiv as Russia's attack on Ukraine continues, Ukraine, March 26, 2022. REUTERS/Thomas Peter TPX IMAGES OF THE DAY 

People listen to classical music performed by local musicians in a metro station that serves as a bomb shelter in Kharkiv as Russia's attack on Ukraine continues, Ukraine, March 26, 2022. REUTERS/Thomas Peter 

A man plays the guitar in a metro station that is being used as a bomb shelter, as Russia's invasion of Ukraine continues, in Kyiv, Ukraine, March 25, 2022. REUTERS/Mykola Tymchenko 

A man reads in a metro station that is being used as a bomb shelter, as Russia's invasion of Ukraine continues, in Kyiv, Ukraine, March 25, 2022. REUTERS/Mykola Tymchenko 

A woman looks at a phone in a metro station that is being used as a bomb shelter, as Russia's invasion of Ukraine continues, in Kyiv, Ukraine, March 25, 2022. REUTERS/Mykola Tymchenko 

A woman sits in a metro station that is being used as a bomb shelter, as Russia's invasion of Ukraine continues, in Kyiv, Ukraine, March 25, 2022. REUTERS/Mykola Tymchenko 

People light candles during a rally against Russia's invasion of Ukraine in Prague, Czech Republic, March 22, 2022. Russian text reads, "Children", in reference to the signs placed near the bombed Mariupol theatre where people sought shelter. REUTERS/David W Cerny 

People light candles during a rally against Russia's invasion of Ukraine in Prague, Czech Republic, March 22, 2022. Russian text reads, "Children", in reference to the signs placed near the bombed Mariupol theatre where people sought shelter. REUTERS/David W Cerny 

People light candles during a rally against Russia's invasion of Ukraine in Prague, Czech Republic, March 22, 2022. Russian text reads, "Children", in reference to the signs placed near the bombed Mariupol theatre where people sought shelter. REUTERS/David W Cerny TPX IMAGES OF THE DAY 

People light candles during a rally against Russia's invasion of Ukraine in Prague, Czech Republic, March 22, 2022. Russian text reads, "Children", in reference to the signs placed near the bombed Mariupol theatre where people sought shelter. REUTERS/David W Cerny 

People light candles during a rally against Russia's invasion of Ukraine in Prague, Czech Republic, March 22, 2022. Russian text reads, "Children", in reference to the signs placed near the bombed Mariupol theatre where people sought shelter. REUTERS/David W Cerny 

People attend a performance of the musical "Hutsulka Ksenia" by actors of the Frankivsk Drama Theater as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater react as they perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater gesture as they perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Actors of the Frankivsk Drama Theater perform the musical "Hutsulka Ksenia" as part of the project "Theater in the bomb shelter" at the Ivano-Frankivsk Drama Theater, which has become a shelter for artists as Russia's invasion of Ukraine continues, in Ivano-Frankivsk, Ukraine March 20, 2022. REUTERS/Yuriy Rylchuk 

Local residents stay at a bomb shelter during Ukraine-Russia conflict in the besieged southern port city of Mariupol, Ukraine March 20, 2022. REUTERS/Alexander Ermochenko 

Local residents stay at a bomb shelter during Ukraine-Russia conflict in the besieged southern port city of Mariupol, Ukraine March 20, 2022. REUTERS/Alexander Ermochenko