Russian Sgt. Vadim Shishimarin listens to his translator during a court hearing in Kyiv, Ukraine, Monday, May 23, 2022. The court sentenced the 21-year-old soldier to life in prison on Monday for killing a Ukrainian civilian, in the first war crimes trial held since Russia's invasion. (AP Photo/Natacha Pisarenko)
A man passes by Russian tanks destroyed in a recent battle against Ukrainians in the village of Dmytrivka, close to Kyiv, Ukraine, Monday, May 23, 2022. (AP Photo/Efrem Lukatsky)
People receive flour at a food donation spot in Kharkiv, eastern Ukraine, Monday, May 23, 2022. (AP Photo/Bernat Armangue)
CORRECTS YEAR TO 2022 NOT 2020 An image taken with permission from the passport photo page of Russian diplomat Boris Bondarev. Bondarev, a veteran Russian diplomat to the U.N. Office at Geneva says he handed in his resignation before sending out a scathing letter on Monday May 23, 2022 to foreign colleagues inveighing against the “aggressive war unleashed” by President Vladimir Putin in Ukraine. (Boris Bondarev via AP)
Cars pass by Russian tanks destroyed in a recent battle against Ukrainians in the village of Dmytrivka, close to Kyiv, Ukraine, Monday, May 23, 2022. (AP Photo/Efrem Lukatsky)
Police escort Russian Sgt. Vadim Shishimarin after a Ukrainian court sentenced him to life in prison in Kyiv, Ukraine, Monday, May 23, 2022. The court sentenced the 21-year-old soldier for killing a Ukrainian civilian, in the first war crimes trial held since Russia's invasion. (AP Photo/Natacha Pisarenko)
People plant flowers in Independence Square, downtown Kyiv, Ukraine, Monday, May 23, 2022. (AP Photo/Natacha Pisarenko)
A woman walks past the Memorial Wall of Fallen Defenders of Ukraine in Russian-Ukrainian War in Kyiv, Ukraine, Monday, May 23, 2022. (AP Photo/Natacha Pisarenko)
A Ukrainian serviceman stands in a trench in Kharkiv region, eastern Ukraine, Monday, May 23, 2022. (AP Photo/Bernat Armangue)
Undertakers lower the coffin of Ukrainian serviceman Oleksander Matyukhin, 32, in Kharkiv, eastern Ukraine, Monday, May 23, 2022. (AP Photo/Bernat Armangue)
A woman, fleeing from an area near the front line in Donetsk, carries her belongings as she boards a bus in Kurakhove, eastern Ukraine, Monday, May 23, 2022. In the Donbas region, people continue to flee from towns and villages coming under heavy bombardment. (AP Photo/Francisco Seco)
A nurse tends to a patient after he underwent surgery for injuries to his leg and abdomen caused by a mine explosion in Severodonetsk, at Kostyantynivka hospital, in Kostyantynivka, eastern Ukraine, Monday, May 23, 2022. (AP Photo/Francisco Seco)
Lyudmila, 85, tends to the garden in Kharkiv, eastern Ukraine, Monday, May 23, 2022. (AP Photo/Bernat Armangue)
Two women ride scooters in downtown Kyiv, Ukraine, Monday, May 23, 2022. (AP Photo/Natacha Pisarenko)
Ukrainian President Volodymyr Zelenskyy addresses by videolink the opening plenary session hosted by Klaus Schwab, Founder and Executive Chairman, World Economic Forum, left, during the 51st annual meeting of the World Economic Forum, WEF, in Davos, Switzerland, on Monday, May 23, 2022. The forum has been postponed due to the Covid-19 outbreak and was rescheduled to early summer. The meeting brings together entrepreneurs, scientists, corporate and political leaders in Davos under the topic "History at a Turning Point: Government Policies and Business Strategies" from 22 - 26 May 2022. (Laurent Gillieron /Keystone via AP)
Women walk to clean streets in Volnovakha, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Monday, May 23, 2022. (AP Photo)
A boy watches flags honoring soldiers killed fighting Russian troops in downtown Kyiv, Ukraine, Monday, May 23, 2022. (AP Photo/Natacha Pisarenko)