Ukraine believes that more than 19,500 children have been illegally abducted to Russia during the war, the head of the Ukrainian presidential office, Andrii Yermak, said in Kiev on Monday. “Russia has committed terrible crimes in the course of its war against Ukraine, but the deportation and forcible abduction of children, our most vulnerable, is one of the most atrocious crimes against humanity since the Second World War,” Yermak said, according to a statement. The number is based on UN figures. Around 3,900 of these children are said to be orphans or without parents. Yermak accused Russia of…