A Ukrainian serviceman shouts "Glory to Ukraine" after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen shout "Glory to Ukraine" after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian female servicemen and civilians pose with National flags after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman reacts after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman shouts "Glory to Ukraine" after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen walk out from a bus after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman shouts "Glory to Ukraine" after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Natalia Manuilova, 44, cook of Azov brigade hugs her son Dmytro after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman reacts after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen shout "Glory to Ukraine" after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
An Ukrainian soldier guards his position while trucks with killed Russian soldiers driving to Russian territory, during repatriation in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine and Russia swap bodies of their fallen soldiers. On the occasion, Ukraine returned 212 corpses, and Russia 45. (AP Photo/Evgeniy Maloletka)
A truck with killed Ukrainian soldiers returning from Russian territory, during repatriation in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine and Russia swap bodies of their fallen soldiers. On the occasion, Ukraine returned 212 corpses, and Russia 45. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman hugs his comrade after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian civilian woman call to her family after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman shows the victory sign after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen walk out from a bus after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen reacts after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen shout "Glory to Ukraine" after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen sit in a bus after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
Oleksii Baiduk lies inside ambulance after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
ICRC workers inspects bags with killed Russian soldiers before repatriation in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine and Russia swap bodies of their fallen soldiers. On the occasion, Ukraine returned 212 corpses, and Russia 45. (AP Photo/Evgeniy Maloletka)
Ukrainian servicemen change a plate showing the total sum of 3210 of POWs and civilians returned home in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)
A Ukrainian serviceman hugs his comrade after returning from captivity during POWs exchange in Sumy region, Ukraine, Friday, May 31, 2024. Ukraine returned 75 prisoners, including four civilians, in the latest exchange of POWs with Russia. It's the fourth prisoner swap this year, and 52nd since Russia invaded Ukraine. In all, 3 210 Ukrainian servicemen and civilians were returned since the outbreak of the war. (AP Photo/Evgeniy Maloletka)