After being imprisoned by Russian authorities for 45 days Yevhen Mezhevyi told ABC News he was finally freed and quickly suffered another trauma: his children had disappeared.Mezhevyi had been separated from his family at a checkpoint in Mariupol as they were attempting to escape the besieged city.Mezhevyi traveled through Russia for two days, communicating with a network of volunteers through the encrypted messaging service Telegram, and staying on strangers’ couches, before he finally reached his children.“The removal of children is one of the specified acts which are necessary to be established in order to prove genocidal intent,” said Wayne Jordash, a humanitarian lawyer based in Ukraine.One of her sons, 17-year-old Slava, said that he and his brother were put into a car and taken to Chernobyl with “plastic bags over our heads.” He said they were beaten, and then taken further to Belarus."