Mykola Melenets, 37, writes the name of his brother, Oleksandr Melenets, 44, who his family says was killed in shelling, on a cross that marks his grave in the village of Kamyanka, on the outskirts of Izium, Kharkiv region, Ukraine, November 3, 2022. The Hague-based International Commission on Missing Persons, an intergovernmental organization, estimates that more than 15,000 people have gone missing across Ukraine during the war, including detainees, those separated from their loved ones and people killed and buried in makeshift graves. REUTERS/Clodagh Kilcoyne SEARCH "KHARKIV MISSING" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.