Dr. Paula Rackoff, right, crosses the Ukraine-Poland border, pushing a cart of medical supplies. Courtesy of Lev Echad By Debra Nussbaum Cohen July 20, 2022 Dr. Paula Rackoff and three medical colleagues were driving back from a long day attending to Ukrainian refugees in Poland when they realized they were nearly out of gas. The past echoed loudly in her mind. “We’re driving past these farms in the middle of the night and I’m thinking, ‘Did that farmer hide Jews? Did this one turn them over to Nazis?’” she said. They managed to make it back to their hotel running...