Ukrainian children face the problem of sexual exploitation in Europe, says a UN official. A special mailbox has been set up to help children who have been taken from their homes by the Russian government.

The hashtag #EuropeStealsChildren is being used to raise awareness of the problem. The Russian Foreign Ministry says it is concerned about the safety of children in the Ukraine. The UN says it has received a number of complaints about the treatment of Ukrainian children in Europe by Russian authorities. It has also received a letter from a woman claiming that her son was taken from her home in Ukraine.