Oleg Kotenko, the Commissioner for Issues of Missing Persons under Special Circumstances uses his smartphone to film the grave a Ukrainian soldier in the recently retaken area of Izium, Ukraine, Thursday, Sept. 15, 2022 who had been killed by Russian forces near the beginning of the war. A mass grave of Ukrainiansoldiers and unknown buried civilians was found in the forest of recently recaptured city ofIzium. (AP Photo/Evgeniy Maloletka)

A view of unidentified graves of civilians and Ukrainian soldiers in a cemetery in the recently retaken area of Izium, Ukraine, Thursday, Sept. 15, 2022 who had been killed by Russian forces near the beginning of the war. A mass grave of Ukrainiansoldiers and unknown buried civilians was found in the forest of recently recaptured city ofIzium. (AP Photo/Evgeniy Maloletka)

Oleg Kotenko, the Commissioner for Issues of Missing Persons under Special Circumstances looks at the unidentified graves of civilians and Ukrainian soldiers in the recently retaken area of Izium, Ukraine, Thursday, Sept. 15, 2022 who had been killed by Russian forces near the beginning of the war. A mass grave of Ukrainiansoldiers and unknown buried civilians was found in the forest of recently recaptured city ofIzium. (AP Photo/Evgeniy Maloletka)