this. >> reporter: pavel is russia's top children's welfare official. he says our children's adoptive american family lied to the boy last week before shipping him off on a solo transatlantic flight to moscow. she sh he shows us a signed copy of the letter from his adoptive mother, torre hansen, which the boy was carrying when he arrived in russia. the american family says the boy had serious behavioral problems and they were deceived before the adoption by russian officials, who said he was healthy. >> how can you imagine that 7 years old boy can be a danger for the family? >> reporter: russian television broadcast footage of him meeting