The schoolgirls who defied the Stasi: 'Someone said, "What if we take him across the border?"'They were West German teenagers on a school trip. He was a young man desperate to escape from East Germany. Thirty five years later, they tell their story It’s December 1984, a week before Christmas. Tina Kirschner and Barbara Kahlke, two 17-year-olds from West Germany, are sitting on a creaking red bus headed for the socialist part of their divided country. They’re on a school trip, and the mood
