In July this year a 17-year-old travelled 500 miles from his home in eastern Ukraine to collect a bomb and a phone hidden in a park in the western city of Rivne. He says he was promised $2,000 (£1,520) to plant the bomb in a van used by Ukraine's military conscription service. "When I was connecting the wires, I thought it could explode then. I thought I might die," he told the BBC. Vlad is one of hundreds of children and older teenagers who the Ukrainian government alleges have been recruited