A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, arrives under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops stand guard as buses carrying Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill in the course of Ukraine-Russia conflict, arrive in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A service member of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sits in a bus upon arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. A sign on a bus reads: "May 9". REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, arrives under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Buses carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, arrive under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, arrives under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives under escort of the pro-Russian military in the course of Ukraine-Russia conflict near Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops guard a road near a bus carrying Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill in the course of Ukraine-Russia conflict, outside Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives under escort of the pro-Russian military in the course of Ukraine-Russia conflict near Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops walks on a road near a bus carrying Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill in the course of Ukraine-Russia conflict, near Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops stands guard on a road near a bus carrying Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill in the course of Ukraine-Russia conflict, near Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, is seen on the roadside under escort of the pro-Russian military in the course of Ukraine-Russia conflict near Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Buses carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, are seen on the roadside while driving under escort of the pro-Russian military in the course of Ukraine-Russia conflict near Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Buses carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drive away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Buses carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drive away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of the Ukraine-Russia conflict, in Mariupol, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko TPX IMAGES OF THE DAY 

FILE PHOTO: Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine, May 20, 2022. REUTERS/Alexander Ermochenko SEARCH " UKRAINE-CRISIS/ANNIVERSARY-TIMELINE" FOR ALL IMAGES/File Photo 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under the escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine, May 20, 2022. REUTERS/Alexander Ermochenko/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2022 PACKAGES. 

A view shows a bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict and arrived under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A view shows buses carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict and arrived under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko TPX IMAGES OF THE DAY 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival under escort of the pro-Russian military in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

Service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill in Mariupol in the course of Ukraine-Russia conflict, sit in a bus upon their arrival in the settlement of Olenivka in the Donetsk region, Ukraine May 20, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops sits next to a cat before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops stand guard before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops stands guard before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops walk across a road before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops walks past an armoured personnel carrier before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops walk before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops walk along a road before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops walk before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops stands guard before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops walk before the expected departure of Ukrainian soldiers, who surrendered at the besieged Azovstal steel mill, in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

A bus carrying service members of the Ukrainian armed forces, who surrendered at the besieged Azovstal steel mill, drives away under escort of the pro-Russian military in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 19, 2022. REUTERS/Alexander Ermochenko 

Olha, a wife of Azov regiment service member who is inside of the besieged Azovstal Iron and Steel Works in Mariupol, takes part in a rally demanding China's leader assistance to organise extraction process for Ukrainian military units, outside the Chinese embassy in Kyiv, Ukraine May 17, 2022. REUTERS/Valentyn Ogirenko 

Olha, a wife of Azov regiment service member who is inside of the besieged Azovstal Iron and Steel Works in Mariupol, takes part in a rally demanding China's leader assistance to organise extraction process for Ukrainian military units, outside the Chinese embassy in Kyiv, Ukraine May 17, 2022. REUTERS/Valentyn Ogirenko 

Olha, a wife of Azov regiment service member who is inside of the besieged Azovstal Iron and Steel Works in Mariupol, reacts as she takes part in a rally demanding China's leader assistance to organise extraction process for Ukrainian military units, outside the Chinese embassy in Kyiv, Ukraine May 17, 2022. REUTERS/Valentyn Ogirenko TPX IMAGES OF THE DAY 

Russian service members stand guard on a road during sunset before the expected evacuation of wounded Ukrainian soldiers from the besieged Azovstal steel mill in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 16, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops stands guard next to a combat vehicle, with the symbol "Z" seen on its side, before the expected evacuation of wounded Ukrainian soldiers from the besieged Azovstal steel mill in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 16, 2022. REUTERS/Alexander Ermochenko TPX IMAGES OF THE DAY 

A Russian service member waits atop an armoured vehicle before the expected evacuation of wounded Ukrainian soldiers from the besieged Azovstal steel mill in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 16, 2022. REUTERS/Alexander Ermochenko 

A service member of pro-Russian troops stands guard before the expected evacuation of wounded Ukrainian soldiers from the besieged Azovstal steel mill in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 16, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops wait before the expected evacuation of wounded Ukrainian soldiers from the besieged Azovstal steel mill in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 16, 2022. REUTERS/Alexander Ermochenko 

Service members of pro-Russian troops stand guard on a road before the expected evacuation of wounded Ukrainian soldiers from the besieged Azovstal steel mill in the course of Ukraine-Russia conflict in Mariupol, Ukraine May 16, 2022. REUTERS/Alexander Ermochenko